[Witzo]

You need to boot to safe Mode and run AVG from there.

* If the computer is running, shut down Windows, and then turn off the power
* Wait 30 seconds, and then turn the computer on.
* Start tapping the F8 key. The Windows Advanced Options Menu appears. If you begin tapping the F8 key too soon, some computers display a "keyboard error" message. To resolve this, restart the computer and try again.
* Ensure that the Safe mode option is selected.
* Press Enter. The computer then begins to start in Safe mode.
* When you are finished with all troubleshooting, close all programs and restart the computer as you normally would.

Definitely try running AVG from Safe Mode. Also might want to download SpyBot Search and Destroy and AdAware. Both of these are free programs. Both should be updated and ran in Safe Mode for best results.