Deep Freeze Standard 8.37.020.4674 How to install/Activate: Disconnect from internet (most recommended) Extract and install the program (run Setup) Set Deep Freeze to boot in "Thawed" mode# #(Shift + Control) + double click the trayicon Copy "Persi0.sys" from %SystemDrive%\Persi0.sys Paste the copy into the writable directory Patch that copy and replace the original file Use given "WIN64AST" to copy/replace the file Restart your computer, that's all... njoy!