I fixed registry errors and erased temporary files with CCleaner.
I scanned with Chkdsk.
I defragmented my hard drive.
I used Dial-a-Fix to repair permissions since I have other protection software as well.
If I uninstall reinstall I get this error:
Local machine: installation failed
Installation:
Error: Action failed for file avgmfx86.sys: starting service....
Error 0x8007007f
I did all that because that's what I was told in the AVG forum.