, and welcome to BleepingComputer.
This really sounds like an infection. Have you cleared all of you Internet temporary files?
Can you start up with Safe Mode in Internet? If you can try running some of these online scans.
Suggested Online Security Scanshttp://housecall.trendmicro.comhttp://www.pandasecurity.com/homeusers/solutions/activescan/http://www.kaspersky.com/virusscanner Scan Only - no removalhttp://www.bitdefender.com/scan8/ie.htmlhttp://support.f-secure.com/enu/home/ols.shtmlhttp://us.mcafee.com/root/mfs/default.asphttp://onlinescan.avast.com/http://ca.com/us/securityadvisor/virusinfo/scan.aspx
Look in the Event Viewer
and see what errors are showing up at the time that this is happening. Each error will have its own date and time shown.Start> right click on My Computer> Manage> Event Viewer
On the right side of the page you will see the options Applications
, and Systems
, double click on Systems
. There are eight columns on this page, the three that you will want are Type
, and Event
The errors will appear in the Type
column, they are red dots with a white X inside of them.
Warnings will appear as a yellow trinangle with an exclamation mark inside.
When you see an error, double click on it and see what the description is.
Please post the error code/s found in the Event
column and the descriptions back in this topic.