Lenovo Personal Computer 10041 10049 User Manual

Machine type: 10041-10049  
H3 Series  
User Guide  
Version 1.0  
2010.03  
31043590  
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Important Safety Information  
Before using this manual, it is important that you read and understand all of the  
related safety information for this product. Refer to the Safety and Warranty Guide  
that you received with this product for the latest safety information. Reading and  
understanding this safety information reduces the risk of personal injury or damage  
to your product.  
Danger: Be aware of extremely hazardous or lethal situations.  
Attention: Be aware of possible damage to programs, devices, or data.  
Note: Pay attention to this important information.  
© Copyright Lenovo 2010  
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Contents  
Contents  
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1
Chapter  
Using the Computer Hardware  
1
This chapter contains the following  
topics:  
Computer hardware introduction  
2
3
4
5
Information on computer connections  
Note: The descriptions in this chapter might  
vary from your computer, depending on  
computer models and configurations.  
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1.1 Front view of the chassis  
Attention: Be sure not to block any air vents on the computer. Blocked  
air vents can cause thermal problems.  
1
2
3
4
5
6
Power switch  
Card reader modules (selected models)  
Optical drive  
Headphone connector  
Microphone connector  
USB ports (2)  
Note: This computer only can be placed in a vertical position.  
2
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1.2 Rear view of the chassis  
(If the rear view configuration in this chapter is different from your actual computer,  
the rear view configuration of your actual computer should be taken as final and  
binding)  
1
2
3
5
4
6
7
9
8
10  
11  
12  
13  
Voltage selection switch (Some models are equipped with this switch)  
Power connector  
PS/2 keyboard connector  
PS/2 mouse connector  
On-board VGA connector  
HDMI connector  
USB connectors (4)  
Ethernet connector  
Microphone connector  
Audio line-out connector  
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3
 
Audio line-in connector  
PCI Express x1 adapter connector  
PCI Express x16 graphics adpter connector (Some models are equipped  
with this connector. For more information about the graphics adapter, see the  
description below.)  
1
2
3
5
4
6
7
9
8
10  
11  
12  
13  
Voltage selection switch (Some models are equipped with this switch)  
Power connector  
PS/2 keyboard connector  
PS/2 mouse connector  
HDMI connector  
On-board VGA connector  
USB connectors (4)  
Ethernet connector  
4
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Microphone connector  
Audio line-out connector  
Audio line-in connector  
PCI Express x1 adapter connector  
PCI Express x16 graphics adpter connector (Some models are equipped  
with this connector. For more information about the graphics adapter, see the  
description below.)  
1.3 Connecting your computer  
Use the following information when connecting your computer.  
• Look for the small connector icons on the back of your computer. Match the  
connectors to the icons.  
• If your computer cables and connector panel have color-coded connectors,  
match the color of the cable end with the color of the connector.  
Note: Your computer might not have all of the connectors that are  
described in this section.  
1.3.1 Check the position of the voltage-selection switch on  
the rear of the computer. Use a ballpoint pen to slide the  
switch if necessary.  
Note: Some computers do not have the voltage switch. These computers  
automatically control the voltage.  
• If the voltage supply range is 100-127 V ac, set the switch to 115 V.  
• If the voltage supply range is 200-240 V ac, set the switch to 230 V.  
0
3
2
115  
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5
 
1.3.2 Connect the keyboard cable to the appropriate keyboard  
connector. (PS/2 connector or USB connector)  
1.3.3 Connect the mouse cable to the appropriate mouse  
connector. (PS/2 connector or USB connector)  
Note: If your computer is equipped with a wireless keyboard or mouse,  
follow those installation instructions.  
1.3.4 Connect the monitor cable to the monitor connector on  
the computer.  
If you have a Video Graphics Array (VGA) Standard monitor, connect the  
cable to the connector as shown.  
Note: If your model has two monitor connectors, be sure to use the  
connector on the graphics adapter.  
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If you have an HDMI monitor, your computer must have an adapter installed  
that supports the HDMI monitor. Connect the cable to the port as shown.  
1.3.5 If you have audio devices, attach them using the  
following instructions.  
Audio line-in This connector receives audio signals from an external audio  
device, such as a stereo system.  
Audio line-out This connector sends audio signals from the computer to  
external devices, such as powered stereo speakers.  
Microphone  
Use this connector to attach a microphone to your  
computer when you want to record sound or if you use  
speech-recognition software. This connector might be  
located on the front of the computer.  
Headphone  
Use this connector to attach headphones to your computer  
when you want to listen to music or other sounds without  
disturbing anyone. This connector might be located on the  
front of the computer.  
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(This instruction is only for PC  
1.3.6 Audio configuration instruction:  
models whose mainboard supports audio transforming from 2.0 stereo to  
5.1 surround.)  
This model of computer supports transforming stereo sound into 5.1 surround  
sound.  
Use the following guides when connecting to the 5.1 surround audio device:  
Blue line-in connector  
Surround  
Green line-out connector  
Front channel  
Pink Mic-in connector  
Center-LEF  
The configurations are as follows:  
1. Right click the sound icon in system property bar and select the sounds option  
to setup the sounds in the pop-up dialog box.  
2. Select a playback device from the playback dialog box, and then click the  
configure button to configure it.  
3. Select 5.1 surround from audio channels in the pop-up speaker setup dialog  
box to proceed with the speaker setup by following as prompted.  
4. After the configuration, 5.1 surround can be used.  
Note: If the audio configuration interfaces in above differ from your actual  
computer, you may use the above steps as reference to configure the 5.1  
surround audio device in your actual audio configuration interface and read  
the electronic help information for further assistance.  
8
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1.3.7 If you have powered speakers with an adapter:  
(This picture is only a sketch print, it does not show the actual figure of the speaker)  
a. Connect the cable that runs between the speakers, if necessary. On some  
speakers, this cable is permanently attached.  
b. Connect the adapter cable to the speaker, if necessary. On some speakers, this  
cable is permanently attached.  
c. Connect the speakers to audio line-out port on the computer.  
d. Connect the adapter to the power source.  
1.3.8 If you have powered speakers without an adapter:  
(This picture is only a sketch print, it does not show the actual figure of the speaker)  
a. Connect the cable that runs between the speakers, if necessary. On some  
speakers, this cable is permanently attached.  
b. Connect the cable to the speaker, if necessary. On some speakers, this cable is  
permanently attached.  
c. Connect the speakers to audio line-out port on the computer.  
d. Connect the plug to the power source.  
Note: Some models are not equipped with external speaker.  
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1.3.9 Connect any additional devices that you have. Your  
computer might not have all connectors that are shown.  
USB connector Use this connector to attach a device that requires a USB  
connection.  
TV-Tuner  
Only supported on systems with optional TV tuner card.  
connector  
Ethernet  
Use this connector to attach the computer to an Ethernet-  
type local area network.  
(This  
1.3.10 Connect the WiFi antenna to WiFi card connector.  
connector only equipped on the model with WiFi card.)  
WiFi antenna connector To connect the computer to a wireless network.  
Screw the WiFi antenna on the WiFi card connector if the model you  
purchased is equipped with the WiFi card.  
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1.3.11 Connect the power cords properly to ground electrical  
outlets.  
1.3.12 If your computer is equipped with Memory Card Reader  
Connector, it is able to read/write data from  
CFI/CFII/MD  
SD/SD High Capacity/Memory Stick/Memory Stick Pro/MMC  
1.3.13 Keyboard and Mouse (wired)  
T
V
L
T
V
L
LVT —— After entering Windows, press this key to launch the LVT (Lenovo  
Vantage Technology) program, Lenovos pre-loaded Home PC software.  
In addition to its own functions, the LVT program will allow you to start  
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other Windows compatible software, specially configured to run on this  
model of computer.  
F2 —— Your computer has the Lenovo Rescue System installed. To learn more  
about this program, turn on the computer, and when the Lenovo logo  
appears, press the F2 key and the Lenovo Rescue System will open.  
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Chapter  
Using the Rescue System  
This chapter contains the following  
topics:  
1
2
3
4
5
OneKey Recovery  
Driver and Application Installation  
System Setup  
System Backup  
System Recovery  
Create Recovery Disc  
Attention: Using this program will result in  
a loss of data.  
You can recover the C drive of the computer  
to the factory default settings or to the  
last system backup status using OneKey  
Recovery. With this operation, all of the  
existing data on drive C will be lost, whereas  
the content and format of the other partitions  
of the hard disk drive will remain unchanged.  
If you want to install an operating system and  
back it up with OneKey Recovery, you must  
format the C partition in NTFS format and  
install the operating system on the C partition.  
Otherwise, the OneKey Recovery system  
cannot run.  
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Note about the service partition:  
The files and relevant data used by the rescue system are saved in the service  
partition. Deleting this partition will make the rescue system unusable. For more  
detailed information, see the following instructions:  
By selecting Control Panel Administrative Tools Computer Management →  
Disk Management, you can see the service partition, which must not be deleted.  
Note: The recovery files and relevant data used by the rescue system are  
saved in the service partition. If the service partition is deleted or damaged  
by someone other than authorized Lenovo servicers, Lenovo will not be  
liable for any losses arising there from in any way.  
2.1 OneKey Recovery  
OneKey Recovery is an easy-to use application. You can use it to restore your  
computer to the system default or a previously backed up state.  
Detailed Operation Procedure  
1. Turn on the computer. When the Lenovo logo appears, press the F2 key on the  
keyboard to start the Rescue System, then you can select OneKey Recovery.  
Note: System Recovery will overwrite all of the data on drive C. To prevent  
loss of data, be sure to back up relevant data before performing system  
recovery.  
2. Follow the onscreen instructions to select the backup task you want to restore  
from and disk you want to install operation system, and press Next to start  
restoration.  
3. Please wait during the process of system recovery. Do not interrupt the  
operation during the recovery process.  
4. After the system is recovered successfully, the software prompts to restart the  
computer. Restart the computer and enter the system.  
2.2 Driver and Application Installation  
The Driver and Application Installation function in the rescue system provides a way  
for the user to conveniently re-install all of the Lenovo applications and drivers that  
were shipped with your Lenovo hardware.  
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Method 1: Automatic Installation  
Turn on the computer. When the Lenovo logo appears, press the F2 key on the  
keyboard to start the Rescue System, then select Drivers and Application  
Installation.  
Follow the screen prompts to install the Lenovo Drivers and Application Installation.  
Click Install to start installing the Lenovo Drivers and Application Installation.  
The system will restart. After the system has restarted, the installation process will  
continue until completion.  
Method 2: Manual Installation  
In the Windows system, Click Start All Programs Lenovo Lenovo  
Drivers and Application Installation.  
After starting the procedure, install all the drivers and software manually according  
to the prompts.  
Notes:  
1. It is recommended not to install the software which is already on the  
computer.  
2. Before accessing the operating system, make sure that the Drivers and  
Application installation has been installed automatically. After that, the  
manual installation function can be used.  
2.3 System Setup  
System Setup configures the network configuration for the Lenovo Rescue  
System to ensure your Rescue System can connect to internet. In addition, System  
Setup sets and manages all passwords for the Lenovo Rescue system.  
2.3.1 Launch  
Turn on the computer. When the Lenovo logo appears, press the F2 key to launch  
Rescue System. Then select System Setup.  
2.3.2 Network Settings  
Depending on the network access mode of the computer, select “ADSL” or “LAN  
Connection” in the network connection modes.  
1. If you select “ADSL,” input the username and password of the ADSL  
connection.  
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2. If you select “LAN connection,” configure the IP address and proxy server of the  
LAN.  
2.3.3 Password Management  
Password Management allows you to set the password for Lenovo Rescue  
System and manage it.  
The default password is blank.  
Set a password when you access the Password Management for the first time.  
If you don’t want to set a password, access the system directly and operate  
accordingly.  
2.4 System Backup  
Back up your system partition to an image file. In case of a system failure, you can  
restore your system from this image file.  
In the Windows system, click Start All Programs Lenovo Lenovo  
Rescue System.  
After starting the procedure, click System Backup to back up your system  
partition according to the prompts.  
2.5 System Recovery  
Reboot your computer into the system recovery environment. You can choose to  
restore to a system backup point or the initial state.  
2.6 Create Recovery Disc  
Create a bootable recovery disc from current system. These recovery discs are  
used to boot your computer and will guide you through the entire restoration  
process.  
In the Windows system, click Start All Programs Lenovo Lenovo  
Rescue System.  
After starting the procedure, click Create Recovery Disc to create a bootable  
recovery disc from current system.  
Follow the screen prompts to create recovery discs.  
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Chapter  
Using the Computer Software  
1
This chapter contains the following  
topics:  
Lenovo Dynamic Brightness system  
Lenovo Eye Distance System  
2
3
4
5
Note: The interface and function of each  
of these features are subject to the actual  
software that was shipped with the  
computer model that you purchased.  
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3.1 Lenovo Dynamic Brightness system  
Lenovo Dynamic Brightness System can automatically detect the surrounding  
ambient brightness and will adjust display brightness accordingly. You can set the  
screen brightness to a comfortable level for different environments. You can also  
set the display delay time to automatically turn off the display when you are away  
from the computer.  
Note: The Auto Switch Display function can not be used when your  
computer is in standby mode, sleep mode or turned off.  
Note: This function applies only to the computer equipped with a Lenovo  
PC camera and is available only after the camera is installed.  
Before using this software, do the following:  
1) Click Start All Programs Lenovo USB2.0 UVC Camera vmcap.  
2) Select Options Preview from the pop-up window to display the image in the  
video capture window.  
Note: If there is no image display in the AMCAP video capture window,  
please confirm that preview in the options has been checked.  
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3) Confirm that Devices Lenovo USB 2.0 UVC Camera has been checked.  
If there are other devices in this option, do not check them. Only choose the  
Lenovo USB 2.0 UVC Camera” device, and the window should display  
the camera image. An image, which is caught by Lenovo PC camera, will be  
displayed in the video capture window. Adjust the position and pitch angle of  
the camera to ensure the whole face is displayed in the video capture window.  
To use this software, do the following:  
Click Start All Programs Lenovo Lenovo Dynamic Brightness system.  
The default setting has been pre-selected. You can adjust the brightness and  
display delay time according to your needs.  
3.2 Lenovo Eye Distance System  
Lenovo Eye Distance System can automatically detect the distance between you  
and the display. It will alert you automatically when you sit too close to the display.  
You can also set viewing distance as well as the time interval beyond which a  
warning will pop up.  
Note: This function applies only to the computer equipped with a Lenovo  
PC camera and is available only after the camera is installed.  
To use this software, do the following:  
Click Start All Programs Lenovo Lenovo Eye Distance System.  
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The default setting has been pre-selected. You can adjust the viewing distance  
according to your needs.  
Notes:  
1. Ensure the lens of the camera is exposed and not covered.  
2. Ensure your eyes are exposed and not covered.  
(The function that detects the distance between the user and monitor  
is based on the position of the user’s eyes. Therefore, if the eyes are  
covered or there is a strong reflection, the distance detection may be  
affected.)  
Wear glasses may affect the accuracy of the face image verification.  
3. The limitation of the distance detection by the camera:  
The minimum distance : about 20 centimters (7.90 inches)  
The maximum distance : about 70 centimeters (27.55 inches)  
The pitch angle (the face rotary angle scope in the vertical):  
Elevation angle: 20 degrees  
Depression angle: 30 degrees  
The horizontal rotary angle (the face rotary angle scope in the  
horizontal): -20 ~ +20 degrees  
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System Maintenance and  
Recovery  
Chapter  
1
2
3
4
5
This chapter contains the following  
topics:  
Daily Maintenance and Tools Instructions  
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4.1 Restoring the System  
The system can develop problems due to erroneous operation or the installation of  
additional software. If software problems develop in the originally installed software,  
you can restore the system by using system backup and restoration features.  
Note: The existing system settings will change after restoration. Check the  
settings of the restored system to ensure they match settings that may be  
critical to your needs.  
Use the following procedure to restore the software to a known functional level:  
1. Click Start All Programs Accessories System Tools System  
Restore.  
2. Choose either the recommended restore point, or select a different recovery  
time from the pop-up box. Choose the latest date when the system was running  
properly.  
Click Next to continue.  
3. The system will start restoration. When all processes run to completion, the  
system displays a message informing you that the restore operation has  
completed successfully.  
4.2 Backup and Restore  
For security purposes, you can back up the system status before you install  
additional software, or otherwise modify system settings. To back up the system  
status, do the following:  
1. Click Start All Programs Maintenance Backup and Restore.  
2. Select the location for your backup. Click Next and follow the instructions to  
continue.  
4.3 Cleaning Up the Disk  
Do the following periodically to clean up the disks and possibly enhance your  
computers performance:  
1. Click Start All Programs Accessories System Tools Disk  
Cleanup.  
2. Choose the disk you want to clean up.  
3. Click the OK button to start the cleanup process.  
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4.4 Checking For, and Correcting Disk Errors  
To properly maintain your system, you should periodically check for and fix hard  
disk errors by doing the following:  
1. Right-click the icon for the hard disk drive (HDD) that you want to reorganize,  
then select Properties from the pop-up menu.  
2. Select the Tools tab, and then click Check Now.  
3. Check your inspection items for the disk and click Start.  
Note: You cannot start error checking until the computer is restarted and  
initialized.  
4.5 Defragmenting the Disk(s)  
Disk fragments are tiny unused storage areas scattered on the disk. The system  
cannot directly reutilize these “blank” spaces and system performance can  
decrease as system operations usually cause the number of unused storage gaps  
to increase. To defragment your disk storage, do the following:  
1. Right-click the icon for the hard disk drive (HDD) that you want to reorganize,  
then select Properties from the pop-up menu.  
2. Go to the Tools tab from disk Properties and select Defragment Now.  
3. Select the time and scheme to be used by the defragging program, then start  
the defragmenting program. Depending on the amount of defragmentation on  
the hard disk drive, this procedure can take a long time (sometimes more than  
one hour).  
4.6 Performing Daily Maintenance Tasks  
Cleaning the computer components  
Because many of the computer components consist of sophisticated integrated  
circuit boards, it is very important to periodically clean around the computer  
to prevent dust buildup. The cleaning supplies you need in order to clean the  
components include: a vacuum cleaner, a soft cotton cloth, clear water (pure water  
preferred) and cotton swabs.  
Attention: Before you clean your computer, disconnect the computer  
from the electrical outlet. Clean your computer with a soft cloth  
dampened with water. Do not use liquid or aerosol cleaners, which may  
contain flammable substances.  
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Note: To avoid damaging the computer or display, do not spray cleaning  
solution directly onto the display. Only use products specifically designed  
for cleaning displays, and follow the instructions that are included with the  
product.  
The following are general methods for cleaning the components:  
You can use a soft cloth to remove dust on the surface of the computer, the  
monitor, the printer, the speakers and the mouse.  
You can use a vacuum cleaner to clean in otherwise inaccessible corners.  
To clean the keyboard thoroughly, shut down the computer and scrub it gently  
with a wet cloth.  
• Do not use the keyboard until it is dry.  
Do not do any of the following:  
• Allow water to enter the computer  
• Use a heavily dampened cloth  
• Spray water directly onto the surface of the monitor or inside of computer.  
Daily attention should be given to LCD monitors. Use a dry cloth daily to brush  
dust from the monitor and keyboard. Keep all surfaces clean and free of grease  
stains.  
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Troubleshooting and  
Confirming Setup  
Chapter  
1
2
3
4
5
This chapter contains the following  
topics:  
Troubleshooting and Problem Resolution  
Note: The description of the TV-Tuner card  
in this manual is only used for the machines  
which have the TV-Tuner card. It does not  
apply to those machines that do not have a  
TV-Tuner card.  
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Solving Problems  
Follow these tips when you troubleshoot your computer:  
• If you added or removed a part before the problem started, review the  
installation procedures and ensure that the part is correctly installed.  
• If a peripheral device does not work, ensure that the device is properly  
connected.  
• If an error message appears on the screen, write down the exact message. This  
message may help support personnel diagnose and fix the problem(s).  
• If an error message occurs in a program, see the programs documentation.  
Note: The procedures in this document were written for the Windows  
default view, so they may not apply if you set your Lenovo® computer to  
the Windows Classic view.  
5.1 Troubleshooting Display Problems  
Problem: Blank screen or no image is displayed on the monitor.  
Troubleshooting and problem resolution:  
1. Check that the monitor has been turned on; if not, press the Power button.  
2. Check to see if the monitor power cord is loose; if so, securely plug the power  
cord to the monitor.  
3. Check that the signal cable to the monitor is securely connected to the  
connector on the computer graphics card; if not, shut down the computer then  
securely connect the signal cable of the monitor.  
Problem: You need to change display property settings.  
Setting display background and icon properties:  
1. Right-click the desktop anywhere except over an icon, then select Personalize  
from the pop-up menu.  
2. From here, select the appropriate options to:  
• Change the desktop background  
• Select a screen saver  
• Select colors and appearance options for icons and characters  
• Set resolution and colors by using Display Settings options  
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Problem: Ripple on screen  
Troubleshooting and problem resolution:  
1. Check for devices located less than one meter from the computer such as  
refrigerators, electric fans, electric dryers, UPSs, regulators, fluorescent lamps  
or other computers that may be generating magnetic interference.  
2. Move any interfering devices away from the computer.  
3. If the problem persists, consult with Lenovo Service.  
5.2 Troubleshooting Audio Problems  
Problem: No sound from integrated speakers.  
Troubleshooting and problem resolution:  
• Adjust the windows volume control — Double-click the speaker icon in the  
lower-right corner of your screen. Ensure that the volume is turned up and that  
the sound is not muted. Adjust the volume, bass, or treble controls to eliminate  
distortion.  
• Reinstall the audio driver.  
• Disconnect headphones from the headphone connector — Sound from the  
speakers is automatically disabled when headphones are connected to the  
computers side-panel headphone connector.  
Problem: No sound from headphones.  
Troubleshooting and problem resolution:  
• Check the headphone cable connection — Ensure that the headphone cable is  
securely inserted into the headphone connector.  
• Adjust the windows volume control — Click or double-click the speaker icon in  
the lower-right corner of your screen. Ensure that the volume is turned up and  
that the sound is not muted.  
5.3 Troubleshooting Software Problems  
Problem: You are unable exit a running program normally.  
Troubleshooting and problem resolution:  
1. Open the Task Manager window by pressing Ctrl, Alt and Delete at the same  
time.  
2. Select the Application tab, select the problem program, and then click the End  
Task button.  
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Problem: You need to install or uninstall a program.  
Problem resolution:  
During installation never abort the install process by powering the system off or  
through other drastic means. This can cause system program disorder or even  
failure during system initialization.  
During the uninstall process, never directly delete the files or folders. This is  
harmful to the system, and might cause a system-wide malfunction.  
Use the following procedure to properly uninstall programs:  
1. Back up all documents and system settings related to the program before  
removing it.  
2. If the program has its own uninstaller, run it directly to uninstall the program.  
3. If the program does not have its own uninstaller, then select Control Panel from  
Start menu.  
4. From the Control Panel, choose Programs and Functions.  
5. Find the applicable program from the Programs and Functions dialog box and  
then select Uninstall/Modify.  
6. Perform the instructions displayed to uninstall the software.  
5.4 Troubleshooting Problems with Optical Drives and  
Hard Disks  
Problem: The Optical drive is unable to read a CD/DVD.  
Troubleshooting and problem resolution:  
1. Check to determine if there is an optical drive icon in the resource manager  
of the operating system. If not, restart your computer. If there is still no icon,  
contact Lenovo Service. Otherwise, continue with the next step of this  
procedure.  
2. Confirm that the CD/DVD has been properly placed in the drive. If not, reload  
the CD or DVD. Otherwise, continue with the next step of this procedure.  
3. Check the specifications that came with your computer to confirm that this  
optical drive is supposed to be able to read this type of CD or DVD.  
4. If the CD/DVD cannot be read, replace it with a known good CD/DVD such as  
one that was shipped with the computer.  
5. If the known good CD cannot be read, visually check the operating side of the  
CD/DVD for defects.  
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Problem: The capacity of the hard disk, as indicated by the system, is less than  
the nominal capacity.  
Troubleshooting and problem resolution: For computers equipped with the  
OneKey Recovery feature, the system recovery feature needs to occupy some  
hard disk space. This may account for the apparent hard disk capacity deficit.  
Further Technical Explanation: The nominal capacity of the hard disk is  
expressed in the decimal system, 1000 bytes. But the actual hard disk capacity is  
expressed in the binary system as 1024 bytes (For example, the nominal capacity  
1G is 1000M, while the actual capacity 1G is 1024M).  
The capacity of the hard disk shown in Windows can be calculated according to  
the calculations in the following example:  
The nominal capacity of the hard disk is 40G, while its actual capacity  
should be: 40 x 1000 x 1000 x 1000/(1024 x 1024 x 1024) = 37G.  
If the Service partition of 3G - 3 x 1000 x 1000 x 1000/(1024 x 1024 x  
1024) = 2.79G is subtracted, the capacity of the hard disk shown in the  
system can be obtained.  
The capacity of the hard disk as calculated using this method may be slightly  
different from the actual capacity due to the rounding of totals.  
5.5 Special considerations for troubleshooting Windows  
Record the following information that may later be useful in troubleshooting system  
problems:  
1. The serial number of the software. The serial number was shipped with the  
computer and was provided separately by the manufacturer. The Help Center is  
unable to retrieve this number.  
2. The drivers for this computer model only support the Windows 7 system.  
3. When you use the Windows Media Center to watch TV, be particularly attentive  
to the following:  
• In the following two situations, you must re-save a channel list:  
a. When you change your TV signal from digital to analog, your saved  
channel list for digital TV is deleted. When you want to watch digital TV  
again, you must create and save a new channel list.  
b. When you change your TV signal from analog to digital, your saved  
channel list for analog TV is deleted. When you want to watch analog TV  
again, you must create and save a new channel list.  
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• Before you can watch teletext programming, you must set the TV tuner input  
signal to analog.  
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