Hello,
If your computer speed really slow downs in 4 days, that should not be an hardware issue.
But we will check :)
- Download ZHPDiag from Nicolas on his website
 - Then run it with administrator's rights (with right click)
 - Then upload the log file on up2share (you will find it on your desktop, just drop the file on the upload zone)
 - Then post the link in your reply
 
Bye :)
Chapi