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– If you have used the partition software, examine the partition on the hard disk drive or solid state<br />
drive by using the software, and recover the partition if required.<br />
– Use either the Rescue and Recovery workspace or the recovery discs to restore the system to<br />
the factory state. For details about restoring the system to the factory state, see “Creating and<br />
using recovery media” on page 107.<br />
If the problem persists, have the computer serviced.<br />
• Problem: My screen goes blank while the computer is on.<br />
Solution: Your screen saver or power management may be enabled. Do either of the following:<br />
– Touch the TrackPoint or the touch pad, or press a key to exit the screen saver.<br />
– Press the power switch to resume from sleep (standby) or hibernation.<br />
Beep errors<br />
Table 9. Beep errors<br />
Problem Solution<br />
One short beep, pause, three short beeps, pause, three<br />
more short beeps, and one short beep<br />
Make sure that memory modules are installed correctly. If<br />
they are, and you still hear the beeps, have the computer<br />
serviced.<br />
One long and two short beeps The video function has a problem. Have the computer<br />
serviced.<br />
Four cycles of four short beeps The Security Chip has a problem. Have the computer<br />
serviced.<br />
Five beeps The system board has a problem. Have the computer<br />
serviced.<br />
Memory problems<br />
Print these instructions now and keep it with your computer for reference later.<br />
If your memory is not operating properly, check the following items:<br />
1. Verify that the memory is installed and seated correctly in your computer.<br />
It may be necessary to remove all added memories to test the computer with only the factory-installed<br />
memories, and then reinstall the memory one at a time to ensure a proper connection. For the<br />
procedures to remove and reinstall a memory, refer to “Replacing memory” on page 143.<br />
2. Check for error messages during startup.<br />
Follow the appropriate corrective actions for Power-on self-test (POST) “Error messages” on page 209.<br />
3. Verify that the latest system BIOS (UEFI BIOS) for your model has been installed.<br />
4. Verify the proper memory configuration and compatibility including the maximum memory size and the<br />
memory speed.<br />
For details, refer to the instructions in “Replacing memory” on page 143.<br />
5. Run “<strong>Lenovo</strong> ThinkVantage Toolbox” on page 207.<br />
Modem and networking<br />
The following are the most common modem and networking problems:<br />
Ethernet problems<br />
• Problem: Your computer cannot connect to the network.<br />
212 <strong>User</strong> <strong>Guide</strong>