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I had some bizarre problem hit my PC yesterday and while I seem to have my problem fixed, I need to run a quality virus scan. The PC in question is ONLY used for my stock trading platforms and the forums I researched contend it is not a virus, but I still would like to verify.
The issue seems to have been corrupted files on the drive, and when the windows process 'superfetch' went for those files windows defender would go haywire and lock up the pc.
So disabling those two seemed to have resolved the issue but as you can see its a very peculiar issue.
I learned the ins and outs of virus protection back in the good old days where ad programs and pop ups were a dime a dozen. That's why I run two machines now, my "clean" one for stocks and another for games, surfing etc. I remember spybot search and destroy was all I needed back then, and I'm looking for something similar. No nonsense, doesn't try to take over my computer with firewalls and email scans and signing up for 30 day trials etc.