My Macbook pro is frozen during start up. It is saying "panic" "kernel"

I was updating my Macbok pro and while restarting it, it froze on the gray screen with the white apple in the middle with a whole bunch of gumbled mess of letters and words. I can not use it, all it alows me to do is power off and on. But when it powers on, it goes straight to the gray screen again. HELP

Hi Lexi,
Gray screen at startup: http://support.apple.com/kb/TS2570
Kernel panics:
http://support.apple.com/kb/TS3742
http://www.thexlab.com/faqs/kernelpanics.html

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panic (CPU 0 caller 0 xffffff8028e59241): "Unable to find driver for this platform:\"ApCI\".\n"@/SourceCache/xnu/xnu-2050.20.9/iokit/Kernel/IOPlatformExp ert.cpp:1548
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My Macbook pro is frozen during start up. It is saying "panic" "kernel"

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