The computer does not return from sleep mode and the computer does not work.
Chapter 4. Troubleshooting
•If the computer does not return from sleep mode, it may have entered hibernation mode automatically because the battery is depleted. Check the power indicator.
•If your computer is in sleep mode, connect the AC power adapter to the computer, then press the Windows button or the Power button.
•If your computer is in hibernation mode or
Note: 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 five seconds or more. If the computer still does not reset, remove the AC power adapter.
Display panel problems
The screen is blank. | • | Do the following: |
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| - If you are using the AC power adapter or the battery, and | ||
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| the battery status indicator is on, press F12 ( | ) to | |
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| make the screen brighter. |
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| - If the power indicator is blinking, press the Power button | ||
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| to resume from sleep mode. |
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| - If the problem persists, follow the solution in the next | ||
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| problem “The screen is unreadable or distorted.” |
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| - Press F9 ( | ) to confirm whether the backlight of the | |
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| LCD screen has been turned off. |
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The screen is unreadable or | • | Make sure that: |
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distorted. |
| - The screen resolution and color quality are correctly set. | ||
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| - The monitor type is correct. |
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Incorrect characters appear on | • Are the operating system or programs installed correctly? If | |||
the screen. |
| they are installed and configured correctly, have the |
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| computer serviced. |
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Sound problems |
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No sound can be heard from | • | Make sure that: |
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the speaker even when the |
| - The Mute function is off. |
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volume is turned up. |
| - The combo audio jack is not being used. |
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- Speakers are selected as the playback device.
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