just built 2 computers exactly alike. one works one doesnt,here is specs corsair 850 ps gigabyte 990f xa-ud3 mobo 8 gigs ram 1 t hd gtx 550 ti 6 core 3.8
heres my question cause im new to building but i took precautions ( rubber gloves,touching case,mobo on top of the box) what is the most common mistakes that gives the the black screen? the card's fan spins and when i unplug the monitor it says no vga detected,when i plug it in the monitor goes into power saving or sleep mode
More aboutblank screen installing
Did you try to insert the graphic card of working pc into the not working one's? Also try other probabilities such as:- change vga cables or change monitors.