firstly, thanks for the solution, but i got some questions to ask. 1- im copying the AppleLSIFusionMPT.kext to the sys/lib/ext and adding the command line 'cp -rv /System/Library/Extensions/AppleLSIFusionMPT.kext' after that i install the 10.7.2 gm combo update. then when i run the second command you wrote, it says no such file or directory. 2- im logging as guest at the beginning. when i go like that, it doesnt even accept the password which is asked in the terminal sudo commands. i'm running on os x 10.7.1 in workstation 7.1.3. your help will be appreciated.