Windows 7 keeps not responding , bsod especialy when running programs or games.

I was playing cs yesterday. Once the map was loaded and i had to click to continue , everything froze. So i restarted my pc and got into the game and boom BSOD, so i restarted again the loading logo would disappear but just black screen , no sound no anything.So then i got into windows again and wanted to play some cs but it would either crash during loading screen or within 5-10 mins of the game. I tried GTA V same thing. During one of the reboots i had "cpu over voltage error" I did oc the system , it was running fine for years but i still turned all of my oc off back to stock.And that error was gone. Almost every time when i boot into windows the system wants to check my OS drive so i let it but it doesn`t fix the issue. I started my pc with just SSD (os drive)connected to see if my main storage hdd was the cause but no, I was still getting the crash.Then disconnected all of my usb devices so its just , my mouse , headset , keyboard connected. Disconnected all of my front IO ports (exept e-sata), Swapped ports on my motherboard for my ssd(even when running just the ssd), I did error checking through windows on my os drive and yes i ticked the box so that it should repair if any were found. And still nothing. Very interesting thing i noticed when my cs crashed all my setting went back to default even i got the notification about the revolver and the m4a1-s and cz again(very weird). Also another interesting things when my pc crashed when i had opera open , all of my passwords and logins were reset so like my youtube channel, facebook etc , Same with my skype login and password. When my pc crashed, when i was just surfing the web or im on skype then i can move my mouse and hear skype but cant click anything , even the minimized icons dont get highlighted when i move my mouse over them and in like 2-3 min it either starts working fine or blue screen or i just re-set. Windows came up with "Disk Volume Error" but i checked the disc and still nothing. I had CPU over voltage error in bios but i think that came up cos i was restarting so much but since im running stock clocks that did not come up any more. I really don`t know what`s going on. Getting my friends psu tomorrow gonna hook it up to my pc and see if the same thing will come up. On Tuesday my new hdd will arrive , i will install Windows 7 on it and cs and see if i get the same thing. Then i can isolate if its my ssd or psu or Motherboard, CPU , RAM. Does any one have any help ?


My specs
Windows 7 Ultimate 64bit
AMD Phenom II 1100T (oc 4ghz , but running stock now)
Asus Republic Of Gamers Crosshair IV Formula
G-Skill Ripjaws X 2x4gb (1600mhz)
Asus gtx 760 Direct CU2
Coolermaster M1000 PSU
Samsung 840 PRO 128GB ssd
Western Digital 1tb blue
Corsair H100i
Coolermaster HAF X
Razer Marauder keyboard
Razer Spectre mouse
Corsair hs40 headset
Asus vg248qe 144hz monitor