Asus CUV4X-V User Manual page 61

4. BIOS SETUP
System Hangup
If your system crashes or hangs due to improper frequency settings, power
OFF your system and restart. The system will start up in safe mode running
at a bus speed of 66MHz and enter BIOS setup.
Cause for Hangup: Improper CPU Speed
ASUS CUV4X-V User's Manual 61