Need advice on diagnosing possible hardware issue

[Braddock]

Suddenly my PC will just shut down as if unplugged after 10 minutes of bootup. Ive rulled out temperature issues to the best of my knowledge. I get an occasional window on bootup that says one of my discs need to be checked for consistency. It seems to check out OK. Im guessing it might be a power supply issue.
Heres my build:http://speccy.piriform.com/results/IO5CuoFurVdaprfsCOcBnPN

I have a spare power suppply from an old build:
http://www.terapeak.com/worth/vio-450w-atx-20-24-pin-power-supply-ky-550atx-atx-12v/122153799843/


My current PS is a Cooler Master RC500PCARd3

Just curious if the spare is sufficient to power my current build and rule out a PS issue.
ANy suggestions would be much appreciated. Thanks

 

[johnb35]

This could be either a bad power supply or a bad hard drive. A bad hard drive can cause system to shut down. However, I would check the cpu temps to see if they are high. Are you able to turn the pc back on right after it shuts off?

 

[Braddock]

Temps seem to be fine. I do occasionally get the "check disc for consistency" page and it checks out. No, sometim a I cannot immediately power back up. I have to turn off the PSU on the back and then back on to get PC to fire up from front button.

 

[johnb35]

Replace your power supply first as that is not a good sign. I would not use the old power supply as its garbage.

 

[Braddock]

Well, it seems to be the PSU. I had another build that had a decent PSU in it, a 400w Corsair. All seems to be good so far. Thanks for your help. Is this PSU sufficient enough for my build? Or should I go with a higher wattage PSU?

 

[johnb35]

You are right close to being maxed out for that psu. When you can I would get a decent 500 watt unit. The EVGA 500 watt is pretty cheap and will suffice. I wouldn't push it until you get it replaced.