Every 6 months or so, when my laptop starts getting a bit filled up with files and applications and such that are unneeded, I like to back up my important stuff and restore it to factory settings. Today, I did just that. But for some weird reason, after it was complete, my laptop became about 10 times slower than it was before the format. Chrome will take 15-20 seconds to open, and games I could previously run at high fps on highest settings like CS:GO now struggle at 20-30. Why is this? I've updated my graphics cards drivers, and about a week ago I cleaned my fans from dust, so why is my PC so slow? I'm not that tech saavy, but I'm still pretty confused. I'd really appreciate any help anyone could give me. Thanks.