So I force restarted my computer and it showed up the black screen of death. I can't run in safe mode, I just can boot other OS's, like Ubuntu. I can stay with ubuntu and I thought it was an os problem, so I installed ubuntu but it keeps showing up me the black screen of death. I searched for fixes and some sites said this: I tried to do this, but I can't. When I press CTRL, ALT and DEL key simultaneously, it just restarts my computer. Can anybody help me? Thanks in advance!