Question MSI Z390-A PRO Boot Up Issues

Apr 19, 2019
5
0
10
SPECS:
  • i7 8700K
  • MSI Z390-A PRO
  • 16GB CORSAIR VENGEANCE RAM
  • GTX 1080 FTW
  • 650W PSU
  • SAMSUNG 970 EVO 256GB SSD
  • 1TB WD BLUE
I recently switched out my old parts, which were some i7 4790k and a z97 ASROCK motherboard. I am still using the same SSD with the genuine copy of windows 10 inside. I reactivated windows.
Now the problem is that whenever I boot up, it's very inconsistent. It sometimes boots up to my login and sometimes it doesn't. Another issue is that I cannot access the BIOS no matter what.
I tried spamming F8, DEL, F2, all of the keys and nothing shows up. I tried booting up the PC without the SSD connected, black scree. I can't even do it through the advanced boot up because the computer can't even restart properly. It just goes black after restarting it.
This is already my second MSI Z390 pro motherboard, it doesn't seem like it can be the motherboard's issue. What is causing this to happen?