4–6
Manual Title Variable
BIOS Overview
Pre-boot diagnostics will only detect codes 3, 4, and 5 after a 15-second time-out.
If you miss the beep code, press and hold the power button for at least five seconds until the
modulated sound is emitted again. This “playback” of the memorized code can also be used to
diagnose an intermittent fault.
✎
Avoid disconnecting the computer’s power cord as this will delete some of the computer’s error
diagnostic information encoded in the modulated audio signal.
BIOS Error Messages
Error Message on Screen
If your computer encounters a BIOS error, it will display a BIOS error message on the screen.
Sometimes, recommendations for troubleshooting are also displayed below the error message, or
you need to press
Enter
to get the recommendations.
The error message and recommendations (if provided) can be used to troubleshoot the problem.
