I just updated my macbook to 12.04 LTS and upon install my wi-fi wasn't working or even showing up for that matter. I then downgraded to 11.10 via booting from an install disc. Upon downgrading to 11.10 I had the wifi problem yet again, along with my mouse not working. ( a USB one helped me )
I then restarted the system and wifi and the mouse problems were temporarily fixed. I then installed a few sources & apple drivers via terminal. I rebooted so these could take effect and my computer now won't respond to mouse or even keyboard actions. Even when plugging in a USB mouse or keyboard nothing works.
I can't boot from CD holding C at startup, and can't get into the boot options with shift either. I also have tried Control Alt F1 with no luck.
Any feedback would be greatly appreciated.