How disinfect PC after reinstalling Windows, Bitdefender? virus symptoms still there..

Hi,

  1. Virus symptoms before re-install: lots of clicks on the screen, random drives to internet sites, clone wi-fi network and connect there automatically after restart, difficulties in pressing the shut-down button, etc
  2. Re-installed Win11 (2 times), installed Bitdefender
  3. After 2-3 days symptoms reappeared and the hassle reinstated on PC (symptoms per 1., above)

I am not a specialist have no clue of what's going on, hence could not get the hang of it; also, afraid that this would soon spread across on other computers in the local network.

Please help! Thanks

Answers