Computer problems

A couple months ago I built my first build and haven't had any problems with it until today.

I mainly built it for gaming and while I was playing WoW today it unexpectedly shut off. Although, it wasn't completely shut off, I could still hear that it was on or in some sort of low power state. I tried pressing the power button and nothing happened, I also tried holding the power button and still nothing happened.

I then unplugged it from the wall and finally it completely shut off.

From there I tried rebooting it and I got to my desktop and the same thing happened, it went to this low power state, but not completely shut off.

I tried rebooting once more, and it didn't even make it to the desktop this time, it went to that low power state while it was starting up.

Also, nothing seemed to be hot except for the HDD and both the CPU and case fan were running fine.

Here are the components -

RAM - CORSAIR XMS3 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMX4GX3M2A1600C9

CPU - AMD Phenom II X2 565 Callisto 3.4GHz Socket AM3 80W Dual-Core Desktop Processor HDZ565WFGMBOX

OS - Microsoft Windows 7 Home Premium 64-bit 1-Pack for System Builders - OEM

CD drive - ASUS DRW-24B1ST/BLK/B/AS Black SATA 24X DVD Burner - Bulk - OEM

PSU - Rosewill RV2-700 700W ATX12V v2.3 / EPS12V SLI Ready Power Supply

HDD - Western Digital Caviar Blue WD5000AAKS 500GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive

Vcard - SAPPHIRE 100283-3L Radeon HD 5770 1GB 128-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card

Mobo - GIGABYTE GA-770T-USB3 AM3 AMD 770 USB 3.0 ATX AMD Motherboard

Case - GIGABYTE gz-ph1a3 Black SGCC ATX Mid Tower Computer Case

thanks in advance.
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More about computer problems
  1. my bet would be on the Power supply. Rosewills aren't that great.

    but you can try this to try to isolate your issue:

    Here's a link to jsc's breadboarding thread:

    additional help here:
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