Kernel Panic - How Do I Recover?

Question

I have a 15 inch Macbook Pro and i was recently installing some updates when my computer crashed. I rebooted it and after about 8 seconds of the gray loading screen an error came up. I learned that this was a Kernel Panic, which is most likely the result of the new software i was installing. I can boot up the computer fine, but it goes to the error screen every time, so i was wondering how to resolve this problem. Any advice helps. The error says:
panic(cpu 0 caller 0x0039C213) : Unable to find driver for this platform: "ACPI".
Debugger called: <panic>
Backtrace, Format - Frame : Return Address (4 potential args on stack)
(6 or 7 lines of hex)
Kernel version:
Darwin Kernel Version 8.7.1: Wed Jun 7 16:19:56 PDT 2006; root:xnu-792.9.72.obj~2/RELEASE_I386
once again, any help would be awesome, as this is not my computer and i dont want to pay for a new one.

Answer 1

Hi BSchatz,
Try this.
Reboot holding down the Apple key and S key. Your machine will boot into a black screen and a lot of white text will load. Once the text has stopped loading, type the following:
fsck(space)-fy then hit the return key. Let it run. It will complete the scan and come up with one of two things:
1 Your system has been modified
2. Your system appears to be OK.
If it comes up with the first, type in the same:
fsck(space)-fy then hit the return key.
This time it should fix the error, and come back with "Your system appears to be okay. If so type:
reboot then hit enter, and your computer will restart, and should do so correctly.
Be sure to keep doing the fsck(space)-fy until your system is okay. Also be sure to have a space between fsck and -fy.