OK I have a system here that runs deep freeze. The client installed Advanced Systemcare to clean up some stuff for some reason. Anyways, once installed and done what it did they refroze the system and restarted, as you do, however ASC now on startup does a registry defrag and restarts each time, hence the loop. So I thought, OK, safe mode, login and thaw or uninstall ASC. I can not do this because while it goes through the driver list it stops at the deep freeze driver, hangs and then restarts. So I can not get into windows at all. Does anyone know a solution?