After doing so, I proceeded to update drivers (using the HP ones supplied on the website), and after finishing that I thought I'd give my games a try.
I use Steam, so I used it to redownload my Skyrim and Team Fortress 2 data. This is where the trouble kicks in. I'm using the same settings as before the format, but I am getting more lag than I ever did before. I could play TF2 on max settings before with no slowness at all, but now I still lag with even toned down settings. Help?