Asus CUV4X-D User Manual page 57

4. BIOS SETUP
For processors with unlocked frequency multiplier
System Hangup
If the system crashes or hangs due to improper frequency settings, power
OFF the system and restart. The system starts up in safe mode running at a
bus speed of 66MHz and enters the BIOS Setup.
Cause for Hangup: Improper CPU Speed
Cause for Hangup: Improper CPU: System Frequency Multiple
(For processors with unlocked frequency multiplier only)
Cause for Hangup: Improper System/SDRAM Frequency Ratio
ASUS CUV4X-D User's Manual 57