I understand what you are saying. The only possible causes of failure I can think of are: - the M/B or the card or something is drawing, ever so slightly, more power (as suggested by kimsland) - plugging the psu into the other computer changed something in the psu. I'm not too phased about my graphics card. The clip design is there to ensure no contact is made and there is still a decent amount of paste there. The card isn't overclocked and is rarely put under HEAVY stress (i.e. games) Anyhow, thanks a bunch to everyone for the help. I'll get the new PSU over the next couple days (fingers crossed that works)!