[QUOTE=ZenEffect;5138236]Jentek PSU might be the culprit here. If it isnt providing stable voltage, or quick enough transient response it can create the issues you are describing. I will get a bios corrupt message if I power off at the exact right (guess its actually wrong) time or if i power cycle alot rapidly.[/QUOTE

I got a new PSU as the Jentek turned out to be 5 years old as i got it from my dads old comp. System seems to be running fine now.