I got a virus a week ago which hijacked my Internet Explorer browser.
The symptoms were;
1 - Internet Explorer started up every time my PC started
2 - Internet Explorer always defaulted back to the about:blank page, and always defaulted to this page as my home page.
3 - Various other browser sessions started without my consent.
I ran all the various PC clean up software and this seemed to remove the virus.
Symptoms 2 and 3 have gone, but symptom 1 persists - IE always starts whenever I turn on my PC

Can anyone tell me where it is starting from and how to stop it?
Kind regards, Simon