Im posting this from my ps3 as psu shuts down after a while. Its a thermaltake toughpower 750w, its 2 weeks old and been fine until today went into bios and 3.3 rail is at 3.7! ive tried taking ram out and still same. All other rails are fine Idont get it I bought this because Ithought it was good quality. Shall I send it back? Istill have invoice, why would this happen? im leavin pc off dont want to damage anything else. Thanks guys advice appreciated !.