I just got the computer from a friend in whom the virus has to be lodged. When starting windows (which is slow), I noticed that the resident protection of avast was inactive. When I wanted to make it active, an RPC error popup. So I tried uninstalling and reinstalling a new antivirus (avira). When I want to install, CRC errors in the virus definitions interrupts the installation. All files that I want to install is incorrect.
As the impression that a virus corrupts files extricate themselves. The same facilities have been made in safe mode but in vain. I then tried to install the Windows antivirus (Microsoft Security Essentials) and do the updates but the same problem appears.
I wonder if anyone has a solution to my problem? Is this some virus activity or something else? Can you suggest me how to solve this problem?
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