Do you have Windows XP?
Your problem may be the infinite loop crash.
Is the PC rebooting after it locks up?
or you are seeing:
STOP 000000000xEA THREAD_STUCK_IN_DEVICE_DRIVER
error?
or
STOP 000000000xA IRQL_NOT_LESS_OR_EQUAL,
which can mean your processor does not have enough
Vcore voltage.