g.Wait for 30 seconds, and then reinstall the
h.Reinstall each device one at a time that you have removed in the earlier steps.
If your computer does not run on battery power, check the following items:
1.Remove and reseat the battery to make sure that it is properly connected. Refer to “Replacing the battery” on page 77.
2.Swap batteries with another similar model, if available.
If another similar ThinkPad model is available, then verify that the battery pack works in the other computer and that the battery pack for the other model works in this computer.
3.Verify the
A power button problem
•Problem: The system does not respond, and you cannot turn off the computer.
Solution: Turn off the computer by pressing and holding the power button for 4 seconds or more. If the system is still not reset, remove the ac power adapter and the battery.
Startup problems
Print these instructions now and keep them with your computer for reference later.
If you receive an error message before the operating system loads, check the following item:
• Follow the appropriate corrective actions for
If you receive an error message while the operating system is loading the desktop configuration after the POST is completed, check the following items:
1.Visit the Lenovo Support Web site at http://www.lenovo.com/support and search for the error message.
2.Visit the Microsoft Knowledge Base homepage at http://support.microsoft.com/ and search for the error message.
Sleep (standby) and hibernation problems
•Problem: The computer enters sleep (standby) mode unexpectedly.
Solution: If the processor overheats, the computer automatically enter sleep (standby) mode to allow the computer to cool and to protect the processor and other internal components. Check the settings for sleep (standby) mode, using Power Manager.
•Problem: The computer enters sleep (standby) mode (the sleep/standby indicator turns on) immediately after
Solution: Make sure that:
–The battery is charged.
–The operating temperature is within the acceptable range. Refer to “Features” on page 15, “Specifications” on page 18, and “Operating environment” on page 19.
If the battery is charged and the temperature is within range, have the computer serviced.
•Problem: The “critical
Solution: The battery power is getting low. Connect the ac power adapter to the computer and plug it into an electrical outlet, or replace the battery with a charged one.
•Problem: The computer display remains blank after you press Fn to return from sleep (standby) mode.
