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Chapter 4
Abnormal Video Display
If video displays abnormally, perform the following actions one at a time to correct the problem.
1.
Reboot the computer.
2.
If permanent vertical/horizontal lines or dark spots display in the same location, the LCD is faulty and
should be replaced. See “Disassembly Process” on page 38.
3.
If extensive pixel damage is present (different colored spots in the same locations on the screen), the LCD
is faulty and should be replaced. See “Disassembly Process” on page 38.
4.
Adjust the brightness to its highest level. See the User Manual for instructions on adjusting settings.
NOTE:
Ensure that the computer is not running on battery alone as this may reduce display brightness.
If the display is too dim at the highest brightness setting, the LCD is faulty and should be replaced. See
“Disassembly Process” on page 38.
5.
Check the display resolution is correctly configured:
a.
Minimize or close all Windows.
b.
If display size is only abnormal in an application, check the view settings and control/mouse wheel
zoom feature in the application.
c.
If desktop display resolution is not normal, right-click on the desktop and select
Personalize
´
Display Settings
.
d.
Click and drag the Resolution slider to the desired resolution.
e.
Click
Apply
and check the display. Readjust if necessary.
6.
Roll back the video driver to the previous version if updated.
7.
Remove and reinstall the video driver.
8.
Check the Device Manager to determine that:
•
The device is properly installed. There are no red Xs or yellow exclamation marks.
•
There are no device conflicts.
•
No hardware is listed under Other Devices.
9.
If the Issue is still not resolved, see “Online Support Information” on page 207.
10.
Run the Windows Memory Diagnostic from the operating system DVD and follow the onscreen prompts.
11.
If the Issue is still not resolved, see “Online Support Information” on page 207.
Random Loss of BIOS Settings
If the computer is experiencing intermittent loss of BIOS information, perform the following actions one at a
time to correct the problem.
1.
If the computer is more than one year old, replace the CMOS battery.
2.
Run a complete virus scan using up-to-date software to ensure the computer is virus free.
3.
If the computer is experiencing HDD or ODD BIOS information loss, disconnect and reconnect the power
and data cables between devices.
If the BIOS settings are still lost, replace the cables.
4.
If HDD information is missing from the BIOS, the drive may be defective and should be replaced.
5.
Replace the Motherboard.
6.
If the Issue is still not resolved, see “Online Support Information” on page 207.
Summary of Contents for AOD250
Page 6: ...VI ...
Page 10: ...X Table of Contents ...
Page 28: ...18 Chapter 1 ...
Page 45: ...Chapter 2 35 3 Execute MAC BAT to write MAC information to eeprom ...
Page 46: ...36 Chapter 2 ...
Page 52: ...42 Chapter 3 4 Lift the Memory cover up to remove 5 Lift the 3G cover up to remove ...
Page 60: ...50 Chapter 3 6 Disconnect the FFC and remove the Keyboard ...
Page 70: ...60 Chapter 3 4 Remove the WLAN Board from the Mainboard ...
Page 78: ...68 Chapter 3 4 Lift the Thermal Module clear of the Mainboard ...
Page 104: ...94 Chapter 3 3 Connect the Camera cable as shown ...
Page 126: ...116 Chapter 3 4 Replace the single screw to secure the HDD in place ...
Page 155: ...Chapter 5 145 Power board Item Description SW1 Power button LED1 Power LED ...
Page 208: ...Appendix A 198 ...
Page 216: ...206 Appendix B ...
Page 218: ...208 Appendix C ...
Page 222: ...212 ...