Tried three graphics cards in two computers and no display

[Amelia Fenoglio]

Originally, my first graphic card worked fine. I bought a newer one and it wouldn't work with the PSU because it didn't have six pin connector. So I plugged it into computer with bigger PSU and pin but no go. Figured card was bad and returned it. Returned the original card to my first computer and suddenly no graphics display on monitor. Tried the card in other computer with same result. Bought another video card, one that didn't require a pin connector, and still no go on either computer. The monitor acts as if no signal at all. I've reset the CMOS, taken out card and all but one mem card and used integrated GPU only to find it, too, won't display. Tried resetting jumper, no result. The fans all spin, the lights on mobo come on, the computer gives a beep as it boots and I can hear hard drive working - just no image just a black screen. This is problem on both computers with same card and integrated GPUs won't work either.

 

[Amelia Fenoglio]

I will try to give some specs without bios or anything visual I think the mobo is mx650 xl it is Asus. Graphics card is geforce gt 1030. Old graphics card is 9800 something or 980 it is 7 yrs old. Old graphics card won't work now and neither will integrated graphics so no way to install or update. I know windows is booting or at least bios is.