Built my PC last Nov. Never had any issue. Left home for 2 days (turned off PC while I was away).
when I came back, first weird thing I noticed at the password menu was that the Ethernet icon had a white circle around it.
When I logged in, noticed that there was no internet icon (Ethernet or WIFI on the toolbar). After awhile, it appeared on its own, but after another while, the PC screen flashed for half a second, and I noticed the icon has disappeared again!
The second weird thing is that I can neither access network sharing center nor Chrome. When I click on these two, they are just completely unresponsive. Chrome shows up in task manager, but I don't see the windows appearing at all! Clicking on network sharing center actually freezes the PC slightly.
Everything else seems to work fine. Internet actually works through Microsoft Edge. Other programs, folders and software seem to work normally as well.
I'm very worried that my PC has been infected, though Bit Defender hasn't detected anything so far. Anyone knows what's going on? Please help me! Thanks!