Hello sinlali,

Firstly I would suggest scanning your computer with AVG Rescue CD.

Afterwards attempt to fully reinstall AVG. Install with full installation package.
Then update your AVG and perform full system scan to check if computer is clean.

Should the issue persist, provide us with both GMER outputs and with Autoruns tool output (as compressed .arn file).

Upload requested files to your favourite online storage service and provide us with link.

Thank you