ati tool used to work fine for me. now it dosnt detect my card after install and when i tell it to use my 3870, it freezes. this has been happening with my 3450 and 3870, and re-installing windows does not solve it. i also disabled my hybrid crossfire option in my mobo bios and reinstalled ati tool many times. it used to work fine with my 3450, and i got good overclocks with it in the past. (same mobo when it worked). when i click on show display in atitool, it says my adapter is not being used by windows.