Whatever has infiltrated my computer will not allow me to open a program (such as my virus program), it causes a pop-up program to open informing me that I've been infected with a virus and to run their virus program. This pop up proram is called "System Security". This same program has a small icon in the lower toolbar that resembles the windows shield except theirs has diagonial stripes on it. A message appears out of their shield that says "cthelper.exe is infected"
I've tried to run AVG 8.5 in safe mode, but it gives me a message saying it cannot run in safe mode.
You if you cant open it or download it. Download Google Chrome (googles browser). Open it and keep it running even if it asks to shut down to load Malwarebytes. Then you should be able to run Malwarebyetes and then AVG. Keep the google browser open at all times. Reply back and let me know if it works or have questions.
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