Specs:
CPU: Intel i-5 3570k @ 4.2gHz (Problem here?)
Mobo: Asus p8z77-v lx (here?)
Ram: Crucial Ballistix Sport 2x4 (8gb) @1600MHz
GPU: HIS 7950 IceQ Boost Clock 3GB
PSU: Antec 550w 80plus modular (here?)
Cooler: Hypermaster 212 Evo
Storage: 120 gb Samsung 840 series SSD
500 gb Toshiba
500 gb Samsung laptop drive
So yesterday my CPU started maxing out at 1.6 gHz at all times, including under full load using Aida64's stability test. At first I tried to change a lot of different things to fix it. None worked so I uninstalled AI suite II which may have been trying to do something to the CPU from within the OS and I also reset my BIOS to all default settings. Did not change anything, CPU still at 1.6 gHz at all times. When I was messing with things it seemed to me that my BCLK could change and that would be picked up by aida within Windows but my multiplier seems to be stuck at 16. Even if within the BIOS it says 42 once I get within Windows it's 16 again. Also the USB port my keyboard was plugged into stopped working, only that port (2.0), no idea if it has anything to do with the same problem but it obviously makes me worry.
If there is anymore information I can provide to the generous soul that decides to help just let me know. Thanks in advance everybody!
Update: Today it is boosting up to a multiplier of 36, still not 38 like it should at default though. Problem still stands though, why on earth was that happening last night?