To repair your AVG:
1. Go to Start -> (Settings) -> Control Panel.
2. Open (Programs) -> Programs and Features, or Add or Remove Programs.
3. Select AVG in the list of programs.
4. Click the Change or Change/Remove button.
5. Select Repair.
6. Follow the instructions on your screen to complete the installation.
7. Restart your computer.
Let me know if that cures it
Java scripts are still an avenue for malware although if Java itself is uninstalled/disabled then the risk is reduced markedly