Discussion Monitor won't turn on after Replacing GPU

Feb 15, 2019
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Hello everyone
So, I've run across a problem. After 6 years I decided to change out my Nvidia GTX 560 and replace it with a 1070.
Me being a big idiot, I didn't uninstall and the drivers of the old gpu that I already pulled out. So as I put the 560 back in, and turn on my computer. My monitor wouldn't turn on. I made sure everything was plugged in and for some reason its still not working.
Any help would be greatly appreciated.