I just upgraded to the New OS on my Mac Book Pro and now my trackpad does not zoom in or out.  I looked at system settings on trackpad and it is set, but does not work How do I get it started?

I just upgraded to the New OS on my Mac Book Pro and now my trackpad does not zoom in or out.  I looked at system settings on trackpad and it is set, but does not work How do I get it started?

This is really unfortunate. I'm sorry that nothing works. I was going to mention holding down the power button and doing a force shutdown but you already did that. You might need to take it into the Apple store. I don't know if booting into safe mode would help. You would have to turn off the machine again, hit the start button and hold down the shift key after you hear the tone, but normally you would let go of the shift key when you see the apple logo and spining wheel. Maybe by holding down the shift key after you here the tone will cause the screen to come back on? The other option is to start up from the 'install disk' if your machine came with one. You would insert the disk, then shut down the computer, and hold down the C key right after hitting the start button.
Here's the link for the safeboot
http://support.apple.com/kb/HT1564?viewlocale=nl_nl

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