XP SP3 goes into reboot loop after removing Adware.Vundo in General Questions Posted August 5, 2008 Thanks for the reply! I ran a full system scan with the Avira CD and it found some trojans. But after scanning with SAS the system wouldn't shut down. So I had to restart manually and here we were again. I also did a full system scan with the Avira free version from harddisk. It found one trojan but the problem isn't solved.