Horrible Performance Despite Specs?

UnluckyFear

Honorable
Apr 2, 2013
26
0
10,530
Specs:
i5 3570k
8 gb ram
GTX 670
1 500 GB hard drive, 1 750 GB hard drive.
Antec 650w Power Supply

I was away for 6 weeks, I come back and boot up my PC. Everything runs EXTREMELY slow. I get 15 fps on CS:GO. I updated my graphics drivers, the previous ones are deleted, my hardware is ALL recognized at functioning. Temperatures seem alright, hover around 30 degrees celcius and are normal. I unparked my cores, ran a virus check (My pc has been turned off for a good month and a half) None of it works. Why is this happening??