HP Pavilion black screen after boot

Pot9o

Reputable
Jul 23, 2015
9
0
4,510
Hi, I replaced the graphics card and PSU on my HP Pavilion 500-199 with an XFX Radeon HD 6870 and an EVGA 500W PSU. I uninstalled the previous graphics card drivers already. When i boot the computer, theres no signal on the monitor, however i see all of the fans spinning inside the pc. I tried switching back to the old graphics card and psu that came with the computer, but the monitor still doesnt show anything. Does anyone know what I can do? Thanks

Edit: I have looked at other threads and tried resetting the cmos and breadboarding everything but there is still no display on my monitor. There is also no connection to the mouse and keyboard.
 

Pot9o

Reputable
Jul 23, 2015
9
0
4,510


Sorry for the late reply. Yes the monitor and cables are working with another system.
 

Pot9o

Reputable
Jul 23, 2015
9
0
4,510
I have went back to the old graphics card that originally went with the pc, but then the computer still won't show anything. I have reconnected all plugs and devices. I reset the cmos by removing the power cable, moving the jumpers from 1-2 to 2-3 and then back, and then reconnecting the power cable. I also have tried removing the battery overnight and replacing it.