I had tried to use a ASUS Strix GTX 980 Ti on a DH87RL.
RAM is OK, CPU is OK (Prime95 stress test), but white lines etc. appears on the screen.
Are there other possible causes than a defective graphics card (overheating, BGA chip problem...)?
A defect on the motherboard? A GTX 960 had work without problems.
Hhmmm, looks like the card's VRAM was not initialized (or is not working properly)...
What happens if you hit F2 to enter BIOS Setup (Visual BIOS)? Do you see it display cleanly?
What happens if you let it continue on and boot into your O/S (Windows/Linux) environment?
If you can continue on and you do not see any issues in your O/S environment, then I would chock this up to a minor incompatibility existing between the RL board's firmware (BIOS) and the Graphics card's firmware (Video BIOS). I would think that this incompatibility, while inconvenient and a little ugly, can likely be ignored.
If, on the other hand, you are seeing issues once you get into your O/S environment, than I would say that there is a hardware issue. My recommendation in this case would be to return the graphics card and get a replacement.
Hope this helps,
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