Currently Being ModeratedFeb 1, 2013 8:26 AM (in response to bellafix)
Stick in your 10.6 install disk and hold the option key down on a wired or built in keyboard and boot.
Select the 10.6 install disk to boot from and under the Utilities menu is the firmware password reset utility.
Currently Being ModeratedFeb 2, 2013 2:54 AM (in response to ds store)
Thank you! When I run verification and repare my HD seems to be ok, but it is still showing bluescreen when restarting. Should I reinstall Mac OS ?