I run WindowsXP pro.and i have been trying to uninstall AVG trial program and replace it with the free version.As soon as I click on uninstall i get this message: C:\windows\system32\autoexec.NT. The system file is not suitable for running MS-DOS and Microsoft Windows applications. Choose 'close' to terminate the application.
I also get the same message when i try to install the free version of AVG. Can someone please advise me. Regards