Have you tried these operations running in safe mºde?
In safe mode, some of the protective services which these programs use to
ensure that they aren't removed, are not running, so they are easier to
remºve.
Update both Windows Defenderand your antivirus applicªtion.
Shut down the computer and turn off the power. Wait for at least 30 seconds,
and then restart the computer in Safe mode or VGA mºde.
You can clear prefetch files by going to Start menu and Run and typing
prefetch, and then click OK.
Open a Internet window and go to Internet Options, Delete Cookies and Temp
Files and included all offline content then also go to start and run and type
%temp% and clear that fºlder.
Run the Disk Cleanup tººl
To start the Disk Cleanup tool, click Start, click run, type cleanmgr.exe in
the Open box, and then click OK.
HOW TO Enable Hidden Files:
http://service1.symantec.com/SUPPORT/tsgeninfo.nsf/docid/2002092715262339
Empty your IE cache and your other temporary file folders, eg: c:\temp,
c:\windows\temp or C:\Documents and Settings\<name>\Local Settings\Temp (the
path to your temp folder will change depending on your name) - sometimes
programmes can be hidden in there - watch out for mysterious *.exe files or
*.dll files in those fºlders.
and c:\Documents and Settings\username\local settings\Temporary Internet
Files\Content.IE5 and delete all the files in those directories and
subdirectºries).
http://www.mvps.org/winhelp2002/delcache.htm
3) Do full deep scans with Windows Defender. Repeat scanning until a
complete scan comes through clean. Ditto with the ªntivirus.
This isn't guaranteed, but it works for a great many items that at first
appear not to be cleaned in normal mºde.
Let us know how it works ºut.
Download the following and run a thorough scan in safe mºde:
NOTE: Make certain to update every app before booting into Safe Mode since
you WILL NOT have access to the Internet from Safe Mºde.
Ad-Aware -
http://www.lavasoftusa.com
http://www.bleepingcomputer.com/forums/tutorial48.html
Spybot S&D -
http://www.safer-networking.org/
http://net-integration.net/index.html
http://www.bleepingcomputer.com/forums/tutorial43.html
Make certain to not to select any of the pernament protection for Spybot and
DO NOT immunize the system, as this can interfere with MSAS' Real-tme
Protectiºn.
CWShredder -
http://www.intermute.com/products/cwshredder.html
SpywareBlaster -
www.javacoolsoftware.com/sbdownload.html
http://www.bleepingcomputer.com/forums/tutorial49.html
Ccleaner -
http://www.ccleaner.com
Also check windows updates for your OS to make sure you have the latest
security patches and service packs instªlled :
http://windowsupdate.microsoft.com/
Good luck
Engel