Hello, My son's laptop (XP Pro) has a bad case of Antivus 360 and associated nasties. I manually removed the Antivirus 360 application but Windows crashes except in Safe mode, and even in Safe mode software cannot be installed, browser diverts to adverts, antivirus software won't run. I've looked for TDSSserv.sys and its aliases but this is something different. My attempts at the 8 steps were not the greatest success: 1 AVG did a full scan and found nothing. 2 CCleaner installed and worked OK 3 was easy: the virus had already disabled the AVG realtime scanner 4 MBAM wouldn't install - the installer just shows an hourglass for a few seconds then stops. An internet connection is available. 5 Similar for SAS, except that it gave an error message 6 Java downloaded OK, but then wouldn't install - message said insufficient privileges, but user has Administrator privileges 7 Didn't attempt HJY because the instructions say the other steps should be completed, but did try to install it - similar result to 4. 8 No logs to post! Firepig EDIT: managed to run HJT by running from its original location rather than downloading - posting the log. Thanks for any help - Firepig EDIT2: also got MBAM to install by running from its original location, but it still won't run, either immediately from installation of otherwise. SAS won't install, evn by this method.