Lenovo ThinkPad Yoga - Manual (Page 119)

– If your system is installed with the Windows 8.1 operating system, use either the Remove
everything and reinstall Windows function or the recovery discs to restore the system to the
factory state.
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 ThinkPad trackpad, 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 The memory module has a problem. 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, five short beeps, and pause Continue to boot immediately when the error was
detected.
Memory module problems
Print these instructions now and keep the instructions with your computer for reference later.
If your memory module is not operating properly, check the following items:
1. Check for error messages during startup.
Follow the appropriate corrective actions for power-on self-test (POST) error messages.
2. Verify that the latest UEFI BIOS for your model has been installed.
3. Verify the proper memory configuration and compatibility including the maximum memory size and the
memory speed.
4. Run the Lenovo Solution Center program.
Networking problems
The following are the most common networking problems:
Ethernet problems
• Problem: The computer cannot connect to the network.
Solution: Make sure that:
– The Lenovo USB 2.0 Ethernet Adapter, the ThinkPad USB 3.0 Ethernet Adapter, or the supported
dock is connected correctly to your computer.
Chapter 9 . Troubleshooting computer problems 103