Gpu doesnt work on bootup

Dec 16, 2018
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So, im having a problem i never ran into before in my pc building days. I have a gtx 760 that doensnt work when i start my pc, i dont have a onboard graphics card on the mother board i installed it in so i cant get in to windows. I tried putting it in my other pc that has onboard graphics and plugged the hdmi directly to the motherboard, got in to windows, installed the drivers and bam, it worked now i could put the hdmi in the gpu and it posts on startup. But as said, i dony have an onboard gpu on the other motherboard so im kinda stuck right now, i tried 2 different motherboards, about 6 different ram, 2 different cpus, 2 different psus and so im kinda thinking i can rule out that the parts are actually damaged. Ive tried reseting cmos on both mobo with no luck and ive also tried other things but it does not want to post. Normally i just plugg it in and it works like standard vga adapter but this card, no. List of parts: gigabyte ga 970a ds3p i think is the name of mobo, fx 6300, 8x1 corsair vengeance lp 1600mhz, 760 msi oc 2gb, tx650w
 
Solution
Are you saying the video card works fine in the test system but not in yours? Do you have another video card you can test in the system having issues?