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so I have a MacBook Pro 17" with the newest Mountain Lion update and Bootcamp Windows 7. When I start the Mac, Mountain Lion shows me the forbidden sign, while still having this loading sign working but nothing happens and Windows shows me the bluescreen with the error code: "0x0000007B"

When I try to start the recovery in OS X the same happens (nothing...) and in Windows recovery the mouse and keyboard suddenly stop working so that I can't do anything. Additional to that I figured out that Windows has a problem with CLASSPNP.sys meaning that the problem lies in the hard drive. Now my question is since the mouse and keyboard stop working in Windows how can I reinstall the drivers in OS X?

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Not clear to me if you have tried the Safe boot mode? –  user44516 Mar 24 '13 at 12:43
    
Do not panic, but the blue screen usually means something wrong with your hard drive. :( –  user44516 Mar 24 '13 at 12:44
    
To perform a Safe Boot, press and hold the Shift key immediately after your Mac starts up. –  user44516 Mar 24 '13 at 12:49
    
Also try using external key board. –  user44516 Mar 24 '13 at 12:50
    
Safe boot mode I tried. Problem with OS X is that I had Windows on last time before the crash so I can only start the Mac HD through Option Key and I don't know if that's not too late for the Safe boot mode. –  user45898 Mar 24 '13 at 13:02

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