never happens to me. Always squeaky clean with no leftover files/directories. once atiman intially reboots to run advanced mode, the standard vga driver is already enabled, and my desktop reso is set to what it was before i ran it. i never reboot after, i just install the new drivers, and reboot after if it asks... the normal process that atiman uses is: 1. run CCC uninstaller in silent mode 2. switch to standard vga driver 3. reboot 4. clean files/directories and registry in pre-desktop 5. load desktop/reg hives if you are running some funky resolution that isnt supported by the standard vga driver, then it will probably hose your desktop. Im using 1920x1200 and never have issues. It will however reset my desktop to a lesser reso if i reboot. no thanks, its a pain to fix everything.