New GPU, long boot time, computer unbearably slow.

Joe_46

Reputable
Nov 6, 2015
6
0
4,510
I just recently purchased a evga GTX 960, and a evga 600W power supply. My CPU is a intel core i5 3570k and my mobo is a gigabyte GA-B75M-D3H. After installing the card my computer became so slow. I used guru3d driver sweeper to get rid of all my old AMD drivers, but when I search my computer for "amd" there are still thousands of folders i cannot delete without system permission. Could this be the cause? I thought my old 400W PSU wasn't enough so i upgraded to the 600W, but that didn't seem to be the issue.

My computer takes a couple minutes to boot, and operates extremely slow. Please help.