Logisys PSU 650 ( Computer Randomly Shut off and restart PC)

Hello there , I have a logisys 650 watt powersupply and just the other day on friday it started to randomly shut off and restart computer.
Now I am not sure how to go about this but I check my CPU and my core temp is 30C , HD is at 30C and system is at 28C. Yes I have controller Panel. Everything is working fine.
I also just order a video card ATI 3850HD 512MB ICEQ Turbo AGP 256bit and I have thought that it might be the cause of it but it doesn't seem to be.

I have Two +12vRails at 22A each. But I also have Four 120MM cooling fans - one outside my computer and the other are inside., another four 80 MM fans two for video card and two for the in tower for more cooling. Just need some answers here, yes I have a protected surge but that might be no good and have to buy a new one. Please help me out here

What exactly is your question? If it is "why is my computer turning off?", then two likely possibilities are (1) your PS is broken and (2) your PS is not powerful enough. Since your PS is not a good quality PS, it's hard to say which is more likely, but either way you are probably better off just buying a decent PS. Here's a decent less-expensive PS: http://www.newegg.com/Product/Prod [...] 6817341012
and here's a *very* nice one at a good price: http://www.newegg.com/Product/Prod [...] 6817703005

I have been having the same problem, but with a logisys 575w. it worked fine for about 1 month but when i got back from vacation it started randomly shutting down after about 10-15 minutes. I can hear a spark or something snapping every time, but it is not too hot.
I have an AMD phenom2 @3.2 Ghz
Radeon 4870
Caviar 500gb HDD
the 4870 runs at about 66 degrees C, but from what I hear thats about normal so I am hoping that its not the PSU, but ill try using a different one

WTF? DO NOT BRING UP DEAD THREADS