I have a acer aspire tc-605 so I have a i7 4790, 4gb ddr3 ram, gt 625 2gb. (windows 10) I wasn't at home for 3 weeks. Someone else was using my pc but not for anything special (only browsing the web, some writing) so I guess he didn't notice anything. I ran a hdd test, antiviruses, even cleaned my pc. The temps are normal and usage of everything is normal too, but the pc is just soo slow. Please HELP!