PC Brand? I know for the Dell's the Skylake chips didn't natively support Win7. The regular Dell Win7 disc wouldn't work. I had to download a special version from Dell that had the drivers slipstreamed into the install package.
I was trying to get my Radeon rx560, It used to work, but ever since I installed my ssd, it no longer works, I think it may have got messed up when I was installing its driver, because my SMBus Controller got messed up to, should I just reinstall windows? I did a clean install on my ssd and ever since that my GPU fails to get recognized, I also slipped in an old graphics card and it works, so it isnt the slot