Hello. My sister bought a GeForce GTX 1660 Black for her computer. She installed it, and initially it worked fine with the screen using a low resolution. She then went to install new drivers. During the installation process, the screen went black and never came back up, giving a "no signal" message. She restarted the computer to find Windows begins to load, but then the screen cuts off and gives a "no signal" message. She reinstalled her old graphics card, a 750 Ti, and it works no problem. I had her uninstall the drivers for that card, shut down the computer, and then reinstall the new graphics card. Windows loaded up fully this time, using a low resolution. She went to check the display adapter drivers, when suddenly the screen went black with a "no signal" message again. Restarting the machine results the same as before, Windows not able to get past initial loading. She is able to get into BIOS with the new card installed. Her motherboard is an ASRock N68-GS4 FX. She has 8GBs of RAM.