ASK dell precision 7560

Could you help me repair the original file? If I remove the RAM, it signals a RAM error, but with the RAM installed, it turns on but doesn't output video.
dell precision 7560
st: 44bm6m3
motherboard: gdb55 la-k621p rev 1.0
intel srkt6

 

[Imranromi]

Could you help me repair the original file? If I remove the RAM, it signals a RAM error, but with the RAM installed, it turns on but doesn't output video.
dell precision 7560
st: 44bm6m3
motherboard: gdb55 la-k621p rev 1.0
intel srkt6