Chapter 4. Troubleshooting
The computer does not | • If your computer is in sleep mode, connect the AC |
return from sleep mode and | adapter to the computer, then press any key or the |
the computer does not | power button. |
work. | • If the system still does not return from sleep mode, |
| your system has stopped responding, and you cannot |
| turn off the computer; reset the computer. Unsaved |
| data may be lost. To reset the computer, press and |
| hold the power button for 4 seconds or more. If the |
| computer still does not reset, remove the AC adapter. |
Display panel problems
The screen is blank. | • Do the following: | ||
| - If you are using the AC adapter, or using the | ||
| battery, and the battery status indicator is on, press | ||
| F12 ( | ) to make the screen brighter. | |
| - If the power indicator is blinking, press the power | ||
| button to resume from Sleep mode. | ||
| - If the problem persists, follow the solution in the | ||
| next problem “The screen is unreadable or | ||
| distorted.” |
| |
| - Press F9 ( | ) to confirm whether the LCD screen | |
| has been turned off. | ||
The screen is unreadable or distorted.
•Make sure that:
-The display device driver is installed correctly.
-The screen resolution and color quality are correctly set.
-The monitor type is correct.
Incorrect characters appear | • Are the operating system or programs installed |
on the screen. | correctly? If they are installed and configured |
| correctly, have the computer serviced. |
27