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– Use either the Rescue and Recovery workspace or the recovery discs to restore the system to the
factory state. For details about restoring the system to the factory state, see “Creating and using
recovery media” on page .
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 may be enabled. Do either of the following:
– Touch the TrackPoint or the touch pad, or press a key to exit the screen saver.
– Press the power button to resume from sleep or hibernation.
Beep errors
Table 8. Beep errors
Problem
Solution
One short beep, pause, three short beeps, pause, three
more short beeps, and one short beep
Make sure that memory modules are installed correctly. If
they are, and you still hear the beeps, 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 beeps The system board has a problem. Have the computer
serviced.
Memory problems
Print these instructions now and keep it with your computer for reference later.
If your memory is not operating properly, check the following items:
1. Verify that the memory is installed and seated correctly in your computer.
It may be necessary to remove all added memories to test the computer with only the factory-installed
memories, and then reinstall the memory one at a time to ensure a proper connection. For the
procedures to remove and reinstall a memory, refer to “Replacing a memory module” on page 69.
2. Check for error messages during startup.
Follow the appropriate corrective actions for Power-on self-test (POST) . See “Error messages” on
page 138
.
3. Verify that the latest UEFI for your model has been installed.
4. Verify the proper memory conguration and compatibility including the maximum memory size and the
memory speed.
For details, refer to the instructions in “Replacing a memory module” on page 69.
5. Run diagnostic programs. See “Diagnosing problems” on page 137.
Networking
The following are the most common networking problems:
Ethernet problems
• Problem: Your computer cannot connect to the network.
142 User Guide