PC boots up to Windows logo splash screen but then screen goes black (no cursor). I have tried to boot in safe mode and it stops when it gets to krbt file. Things I have already done for troubleshooting:
Pulled drive out and put in another PC and ran scans. Malwarebytes, Adware, and AVG all came up clean.
Video is integrated so I put a new video card in and same black screen.
Tried new memory.
Tried different memory slots with new memory.
Tried new power supply.
Changed bios battery.
Tried new hard drive and when installing Windows it got to checking for current operating systems and would not go any farther.
Checked CPU and heatsink and heatsink came off easily so I added more thermal paste.
After booting the PC again in normal mode it went to the splash screen and went black. I can hear the hard drive running and the fans are running just no video with a black screen.
I am thinking it is probably a bad CPU or motherboard at this point??? Any and all help is much appreciated!