I assume you have tried fixing it with HijackThis?
Download this reg tool to a permanent Folder:
http://www.xs4all.nl...s/regsearch.zip
Unzip and Extract All Files, Double Click RegSearch.exe to Run!
In the Top Open Box Labeled Enter Search Strings,Copy&Paste this:
87766247-311C-43B4-8499-3D5FEC94A183
Click OK!
Give it some time to complete and it will produce a Notepad page,Copy&Paste the Contents of that page to the next Reply!