RE: can t uninstall avg antivirus 2012 free edition
The provided log files revealed that the (un)installation/update is failing on AVG anti-rootkit driver installation. If you wish to uninstall only, please use the AVG Remover utility and perform manual cleanup as described in this AVG Forums article.
If you wish to install AVG again, simply install it using the most recent installation package as mentioned in the linked article. The repeated restart request should be resolved then.
Should the issue persists, please provide us with fresh AVG installation log files and an msinfo output.