PC won't boot FM2 A75IA E53

so my PC had a blue blinking power light on it when I came back one afternoon and won't boot up anymore. I took the cover off unplugged the power cord and pressed the power button. the fan above the CPU moved briefly but did not spin. any suggestions?its a custom build MSI .
. I put in as much info as I could remember.It's a custom build by now defunct Rain computers.I don' see a cmos battery on the board but dont know if it has one. That was my first thought then possibly power supply as mentioned
Board FM2 A75IA E53*
Bios ms 7792 ver 1.1
Mem corsair xms3 2x8 cmx16gx3m2a1600c11
Hdd 256 ssd

Any help is appreciated.
Os windows 8
Psu amd 3.2ghz

 

It will have a CMOS battery. It's possible that it's on the underside of the mobo.

 

Found it. It is wrapped instead of in a clip holder like I am used to seeing. Think that replacing it may fix the issue?

 

If it hadn't been replaced in the last 4 years, it just may fix the issue. But, it has to be an exact replacement. My Dell laptop has a wrapped battery with a keyed twin lead attached. I had to get a CMOS battery for my specific model laptop. I couldn't just go and buy a CR2032 button cell battery (typical CMOS battery). But, my battery was less than $5.00 US on ebay.