You can try to uninstalling AVG and then reinstalling it and see if that helps. If it doesn't, then I would suggest running these simple 5 steps to see if there is any malware on your computer.
To get Expert Help with malware removal:
I recommend that you read this article… ( Simply, click on the links to be re-directed.)
"Having problems with spyware and pop-ups? First steps;
IMPORTANT - Read This Before Posting For Malware Removal Help
Please follow the instructions very carefully; then, post all the requested logs and information; as instructed, in the
HiJackThis Log Help Forum.
http://www.techsupportforum.com/secu...this-log-help/
Please ensure that you create a new thread in the HiJackThis Log Help Forum;
not back here in this one.
When carrying out The 5 Steps,
IMPORTANT - Read This Before Posting For Malware Removal Help
if you cannot complete any of them for whatever reason, just continue on with the next one until they are all completed.
However,it is extremely important to make mention of the fact that you could not complete any of the steps in your post to HiJackThis Log Help Forum.
http://www.techsupportforum.com/secu...this-log-help/
where an Analyst will assist you with other workarounds.
Once done, please be patient, as the Security Team Analysts are usually very busy; one of them will answer your request as soon as they can.
To get Expert Help with malware removal:
I recommend that you read this article… ( Simply, click on the links to be re-directed.)
"Having problems with spyware and pop-ups? First steps;
IMPORTANT - Read This Before Posting For Malware Removal Help
Please follow the instructions very carefully; then, post all the requested logs and information; as instructed, in the
HiJackThis Log Help Forum.
http://www.techsupportforum.com/secu...this-log-help/
Please ensure that you create a new thread in the HiJackThis Log Help Forum;
not back here in this one.
When carrying out The 5 Steps,
IMPORTANT - Read This Before Posting For Malware Removal Help
if you cannot complete any of them for whatever reason, just continue on with the next one until they are all completed.
However,it is extremely important to make mention of the fact that you could not complete any of the steps in your post to HiJackThis Log Help Forum.
http://www.techsupportforum.com/secu...this-log-help/
where an Analyst will assist you with other workarounds.
Once done, please be patient, as the Security Team Analysts are usually very busy; one of them will answer your request as soon as they can.