After running for 4 minutes the screen goes blank and the power button doesn't respond.
i) it went blank when I hadn't realised I left the windows xp dvd in the drive (started setup then went black)
ii) it went blank after booting up into windows (as far as the logon screen) then went blank
Guess my PSU isn't sufficient. It has a 4xpin ATX 12V power connector and not 8. Hope I haven't fooked the board up.
Is it possible to use two PSUs for the time being or do you think the fact I'm having to use a 4pin connector is the issue here?
Very strange! Any suggestions would be welcomed
Edit: forgot to mention that it's a fairly cheap 500W PSU (but did absolutely fine on the last build).
I recommend a ps with at least 22 amps on each 12v rail; corsair has a single rail with higher amp ratings on some models. Newegg had a rosewill 600w with similar specs for $40 shipped in yesterdays email promos. Rosewill isn't a great brand, but I realize some folks don't have $100 or more for a premium ps.
Thanks everyone for all the suggestions. The problem indeed did seem to be the lack of an 8 pin connector. I picked up a 500w OCZ ModXStream-Pro in the end. Bloody good PSU and I love the modular design on it with the netting to tidy the cables up. Strangely though, the PC still wouldn't boot up until I connected the dvd drive (keyboard wouldn't light up or work until that drive was connected too).
Had it working now for 24 hours and it seems fine. Running Xp 32 bit - I don't think i'll upgrade to Windows 7 while I'm relying on the on board graphics as it seems to eat up 700mb of system memory (sometimes windows reports 2.75gb)