I recently bought a corsair 650w tx2 to upgrade my pc, however after fitting it and plugging everything in when I press the on button it will turn on for about a second then shut off. Couple of seconds later turn on and shut off again etc
Well I put the old PSU in the comp again and that worked. So it's just new PSU with that comp.. Where does that leave me?
Well that leaves you with a working computer and a PSU that needs to be RMAed. Are you sure the new PSU has enough juice to drive your setup? Seems like your old one does (though it may be over-stressed with your upgraded system). If you'd like post your full system specs.
So your new 650W PSU works in one computer but not in the other? Are you hooking up all the cables that are necessary? Graphics cards sometimes need cables, the motherboard often has multiple cables, etc. etc. Sorry if I'm being redundant but if the PSU is indeed functioning properly in one machine, then you must not be hooking it up properly to the other machine. What graphics card/cards are you using in the machine that won't work?
Ati 5570 ATM, I set it up exactly the same as the other PSU yet it doesn't work, when I unplug everything as in ram gfx and all that it still does the same, turns on for a second then shuts off and gets stuck in a circle.
I think I know the problem, on newegg someone posted that the seasonic x series PSU s were incompatible. And I think one of the reviews for the tx2 said it was basically a seasonic x. So I'll take that back and see if I can get a different one to work