Try the following:
Download Unhide.exe to your Desktop:
If the file does not download, copy/paste the following link >without brackets or quotes< in the address bar of your browser:
Right click on unhide.exe and select: Run as Administrator
Allow the program to run.
This program removes the hidden attribute from all the files on your hard drives.
Let us know how it goes.
Next, please download RogueKiller
Save it to your Desktop.
Now, close all open programs.
For Vista/Windows 7, right click the file and select: Run as Administrator
For XP, simply double-click RogueKiller.exe
When prompted, type 1 and hit Enter.
An RKreport.txt should appear on your Desktop.
Note: If the program is blocked, do not hesitate to try several times. If it really does not work (it could happen), rename it to winlogon.exe
Please post the contents of the RKreport.txt in your reply.