ok,then this looks like a tdss rootkit.try this:
*]Download TDSSKiller and save it to your Desktop.
[*]Extract its contents to your desktop.
[*]Once extracted, open the TDSSKiller folder and doubleclick on TDSSKiller.exe to run the application, then on Start Scan.
http://i1116.photobucket.com/albums/k567/com155/kastdsskiller.png
[*]If an infected file is detected, the default action will be Cure, click on Continue.
http://i1116.photobucket.com/albums/k567/com155/kastdsskiller1.png
[*]If a suspicious file is detected, the default action will be Skip, click on Continue.
http://i466.photobucket.com/albums/rr21/JSntgRvr/TDSSKillerSuspicious.png
[*]It may ask you to reboot the computer to complete the process. Click on Reboot Now.
http://i1116.photobucket.com/albums/k567/com155/kastdsskiller-1.png
[*]If no reboot is require, click on Report. A log file should appear. Please copy and paste the contents of that file here.
[*]If a reboot is required, the report can also be found in your root directory, (usually C:\ folder) in the form of “TDSSKiller.[Version][Date][Time]_log.txt”. Please copy and paste the contents of that file here.
THEN READ THIS CAREFULLY AND FOLLOW THE STEPS:
Start OTS. Copy/Paste the information in the quotebox below into the panel where it says “Paste fix here” and then click the RUN FIX button
[Unregister Dlls]
[Registry - Safe List]
NY -> < Internet Explorer Settings [HKEY_USERS\S-1-5-21-3295999096-4066887843-2553295482-1003\]
NY -> HKEY_USERS\S-1-5-21-3295999096-4066887843-2553295482-1003\: Main\\"Start Page" -> http://www.google.it/ ->
[Empty Temp Folders]
[EmptyFlash]
[CreateRestorePoint]
[Reboot]
The fix should only take a very short time. After reboot,please post the following report/log into your next reply