PLEASE NOTE: I don't know much about troubleshooting/fixing problems, so the steps I've taken might seem stupid. Sorry.
25-01: I installed the game Diablo 3 to my PC. When starting the game, it crashed my pc. No bluescreen, just shuts off as if the power got disconnected. After deleting D3Prefs.txt (the file that saves my ingame settings like resolution or anti aliassing), the problem was fixed.
26-01: When starting my computer again and launching Diablo 3, it crashed again. Deleting D3Prefs.txt fixed the problem again. I noticed that when starting Overwatch, I have the same problem with the same temporary fix. Contacted Blizzard support, couldn't come to a fix.
27-01: Noticed other games from Steam and RIOT games also crash my PC uppon startup (THIS DID NOT HAPPEN BEFORE 27-01). Weird. Unistalled graphics drivers, installed an older driver, still crashes. I did a system recovery back to 20-01, did not fix the problem.
28-01: When I started my PC and input my password, my PC crashed. Tried again, same result. Removed BIOS battery to clear CMOS. After that it wouldn't get me to the ''login'' screen for Windows. It would show me the Windows Icon, then that circling load icon, then another circling load icon without the windows icon above it, and when that one was done, I don't get a login screen. It just stays black.
My computer has been working normally for about 3 months now (that's when I built it). Now I can't get into Windows and don't know what to do. I've tried:
Inserting the RAM in different slots/using only 1 stick.
Different GPU Drivers
Disabling startup of all non microsoft services via MSConfig
My computer specifications:
GPU: GTX 1660 TI
Motherboard: MSI Z97 Gaming 5
PSU: 650W EVGA (I think bronze)
Cooler: stock intel cooler (temps never went over 70 when playing games such as GTAV/Witcher 3)
RAM: Corsair Vengance 16GB (2x8)
Storage: 1 128GB SSD , 1 500GB HDD. Windows and drivers are installed on the SSD, games and other stuff on HDD
BIOS version: Honestly, I have no clue. It's either Version 1.0 or 1.D.
P.S. My motherboard shows certain numbers at the bottom. I have no clue what they are for but if they are important, the numbers shown are 28 or 34. If there is any additional information I should upload please let me know.