at least I think it is Windows.
I had a virus called Twunk_32Exe and to get rid of it I had to do System Restore, and on coming back I keep getting messages like this repeatedly
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Why did I restore, well I ran AscPro deep scan and repair, still there, and CCleaner, so I googled Twunk_32.exe, and found a link which got me using Hitman Pro which ran for ages and at the end wanted $30 t fix all the faults it found, so I downloaded a cracked version of it from Piratebay but the comments are contradictory, good and bad.