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Chapter 5. Troubleshooting
Keyboard problems
A number appears when | • The numeric lock function is on. To disable it, press |
you enter a letter. | Fn + F8. |
| |
Sleep or hibernation problems | |
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The computer enters sleep | • If the processor overheats, the computer automatically |
mode unexpectedly. | enters sleep mode to allow the computer to cool and to |
| protect the processor and other internal components. |
| Check the settings for sleep mode. |
The computer enters sleep | • Make sure that: |
mode immediately after | - The battery is charged. |
| - The operating temperature is within the acceptable |
| range. See “Appendix B. Use and care |
| information” on page 64. |
Note: If the battery is charged and the temperature is within range, have the computer serviced.
The critical | • The battery power is getting low. Connect the AC |
message appears, and the | adapter to the computer, or replace the battery with |
computer immediately turns | a fully charged one. |
off. |
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