Computer starts going slow all of the sudden and it is very laggy PLEASE HELP!

snatxi

Commendable
Jan 24, 2017
24
0
1,520
okay so i was normally playing a casual game (League Of Legends) and all of the sudden my computer starts running at an unusable speed, mouse takes 5 seconds to move, audio sounds horrid, and every game won't go above 1 fps.i restarted with no luck, then i proceded to do system restore, didnt work either, then i reinstalled windows, didnt work either. after reinstalling windows 10 everything ran better but it still had chopped lag. audio wont sound horrible anymore but the lag in the programs is completely unbearable. i tried everything at this point.
things i tried:
-reinstalling windows
-system restore
-chkdsk
-malware scan
-dust cleaning my pc
-reseating all the components

Additional Info:
the game that lags the most is league of legends. before it ran at 160fps, now it runs at 60 but it spikes to 5 or 10 every 2 seconds.
2d arcade games such as beat hazard or super hexagon have lag spikes as well, from over 500 fps they go down to 20 and 10.
some games freeze completely for a few seconds
Specs:
CPU:Intel I7-4790 3.60 GHz
16 GB RAM
GPU: Nvidia GTX 980 2 GB
Windows 10 Pro 64 bits
 

snatxi

Commendable
Jan 24, 2017
24
0
1,520

it says here the cpu is running at 96-100 C° and the GPU at 40-50 C° that's pretty bad...
 

snatxi

Commendable
Jan 24, 2017
24
0
1,520


but ihave never had this problem in the year that ive been using this computer?
 

snatxi

Commendable
Jan 24, 2017
24
0
1,520


I found the issue, it was malware who damaged the driver of my cpu. and on top of that a wire was stuck in the fan
thanks man! u kinda helped me with checking the temps