Go through these Cleaning steps:
1... First, try to clean up your caches, Internet files and delete cookies
by doing this:
Click Start >> Control Panel >> Double click Network and Internet
Connections >> Double click Internet Options.
On the IE properties windows you will see these Tabs:
General | Security | Privacy | Content | Connections | Programs |
Advanced
Under General Tab clear your History, Internet Files and Cookies.
Then click on Advanced tab and scroll down to under the Browsing Option:
[&] Browsing
[ ] Enable Third-Party browser extensions (Req Rest) uncheck this box.
Then click on Programs Tab and click Manage Add-Ons and Disable all non
Verified Add-Ons (You should Renable them later one-by-one and see the
culprit and update it or remove it.
How to manage Add-Ons: http://support.microsoft.com/kb/883256
Scan for malware from here:
SuperAntispyware - Free http://www.superantispyware.com/superantispywarefreevspro.html http://onecare.live.com/site/en-gb/default.htm?s_cid=sah http://onecare.live.com/standard/en-gb/default.htm
RootkitRevealer v1.71
By Bryce Cogswell and Mark Russinovich http://www.microsoft.com/technet/sysinternals/Security/RootkitRevealer.mspx