Homebuilt system isn't rebooting properly

[the1corrupted]

Hello, everyone! Got a bit of a quandry here as my home built system doesn't reboot correctly, and I think it might have something to do with the motherboard, but I'm really not sure.

I can shut down and start up properly, and I can get into the bios no problem. When I reboot, the computer seems to shut down but the power remains on (I had one successful reboot, and the case power stayed on), and I get no display. Here's the build:

OS: Windows 7 Home Premium (64bit)
Motherboard: MSI 970A-G46
RAM: Crucial Ballistix (1333 MHz, 7 CAS)
CPU: AMD Phenom II 965 @ 3.83 GHz
Graphics: EVGA nVidia GTX 460 (stock clock)
SSD: Mushkin 120GB Chronus

Now, what I had to do in the BIOS, I enabled OC Genie (because it was easy) but I manually pushed up the RAM. OC Genie had the RAM operating at 1066 before overclock, so I bumped it to 1333.

I've tried googling for improper rebooting with zero luck.

 

[the1corrupted]

It's a brand new Apevia 700W PSU I got cheap on New Egg. Could that be the source?

 

[the1corrupted]

More specifically, it's this PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E16817148046

What happens is when I restart from the system, the computer acts like it shuts down, but I don't think it does. I can recover by holding the power button until the computer powers off, then boot like normal.

 

[the1corrupted]

It's been weeks and the problem hasn't resolved. I also found out that the reset button still works from the "hanging" state.

Also, is it weird that my motherboard bios takes a long time to boot up?