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– The ac power adapter is connected to the computer and the power cord is plugged into a working
electrical outlet.
– The computer is turned on. (Turn the power button on again for conrmation.)
If a power-on password is set:
– Press any key to display the prompt for the power-on password. If the brightness level of the screen
is low, increase it by pressing Home.
– Type the correct password and press Enter.
If these items are correctly set, and the screen remains blank, have the computer serviced.
• Problem: When I turn on the computer, only a white cursor is displayed on a blank screen.
Solution: If you have modied a partition on your hard disk drive by using partition software, information
about that partition, or the master boot record might have been destroyed.
1. Turn off the computer, and then turn it on again.
2. If you still see only the cursor on the screen, do the following:
– If you have used the partition software, examine the partition on the hard disk drive by using the
software, and recover the partition if required.
– Reset your computer to the factory state. For more information, see Chapter 5 “Recovery
overview” on page 47
.
If the problem persists, have the computer serviced.
• Problem: My screen goes blank while the computer is on.
Solution: Your screen saver or power management might have been enabled. Do either of the following:
– Touch the TrackPoint pointing device or the touch pad, or press a key to exit the screen saver.
– Press the power button to resume from sleep.
Beep errors
Table 5. Beep errors
Problem
Solution
One short beep, pause, three short beeps, pause, three
more short beeps, and one short beep
Ensure that memory modules are installed correctly. If
they are, and you still hear the beeps, have the computer
serviced.
Three short beeps, pause, one short beep, pause, one
more short beep, and three short beeps
PCI resource allocation failure. Power off the computer
and remove the PCI devices. If the beeps persist, have
the computer serviced.
One long and two short beeps
The video function has a problem. Have the computer
serviced.
Four cycles of four short beeps
The Security Chip has a problem. Have the computer
serviced.
Five short beeps The system board has a problem. Have the computer
serviced.
Five short beeps, pause, ve short beeps, and pause
Continue to boot immediately when the error was
detected.
Memory module problems
Print these instructions now and keep it with your computer for reference later.
Chapter 9. Troubleshooting computer problems 91