The only thing I can figure that your computer might have an infection. If you could please follow the next set of instructions it may solve the problem:
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
The HJT 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.