What was your old motherboard ? Have you tried reset to factory defaults ? Have you changed some cables while changing with the new parts ?
Specs MSI h81i motherboard 2 x 4g Hyperx DDR3 I5 4670 CPU corsair sf600w psu gygabyte gtx 670
So i rebuild my computer (Ram, CPU and GPU are the only parts that arent new) I power on my pc (My monitor usually turns on by itself at this point but dosnt recognize anything) All fans power on for about 10 seconds. It shuts off by itself and retarts and stays on but my monitor still dosnt recognize any input. Iv switched my DVI cable from directly to the graphics card into the motherboard but the same thing happens. Iv removed and switch the RAM but the same thing happens. If anyone could help that would be awesome!
Sorry for my poor spelling and grammar.
Edit: just took everything apart and reasembled it from scratch, same issue.