Scan your PC with malwarebytes. Turn it on temporally if you dont like have it turned on
type "sfc /scannow" ( without quotes ) on your cmd.
to open cmd type cmd on run window
to open run window press windows logo button + R
reset host file:
https/support.microsoft.com/en-us/help/972034/how-to-reset-the-hosts-file-back-to-the-default
type msconfig on run window
see startup tab there
look suspicious startup programs or disable one by one which by doing this you will able to identify
which program burn your GPU
if you cant type malware on browser download internet download manager
use internet download manager
click add url.
then copy this line
https
/downloads.malwarebytes.com/file/mb3/
always download torrents from reliable sites