I've been able to complete an Ad-Aware SE scan by proceeding in steps. I rebooted into safe mode, and scanned with custom settings. I de-selected everything but deep scan registry, then removed critical objects. Then I selected all folders on the C: drive. This scan froze on the System Volume Information folder, which seems to be hidden in Windows Explorer. This seems to be the restore points in System Restore. Turning off this service and rebooting erased all restore points, and the service was restarted after rebooting. Afterwards Ad-Aware SE scan was able to get through all folders on the C: drive. Ad-Aware SE still froze on the conditional scan, and no log was written. I restarted Ad-Aware SE and scanned again, cancelling the scan before conditional scan started. This allowed removal of all critical objects found before cancelling. Aterwards a full system scan was able to complete.