Mac book pro start up, white screen pops up and it don't process any further! Can anyone help?

Question

When my laptop was updating the software it was stuck on installing the updates. I held the power button then turned the laptop back on! It makes the on sound but stay on the white screen! Can anyone help?

Answer 1

Hey Antonioaok,
Welcome to the Apple Support Communities. If you are getting the white screen when you start up, there are a few steps that can be done. The first one would be resetting your NVRAM
About NVRAM and PRAM
http://support.apple.com/kb/HT1379
Resetting NVRAM / PRAM
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.
The next step, if it does not boot to your operating system would be to attempt to boot into safe mode. These steps are also based on the fact that your profile states you are running Snow Leopard.
Mac OS X 10.6: Starting up in safe mode
http://support.apple.com/kb/PH6455
To start up in safe mode:
Shut down your computer and wait 10 seconds.
Press the power button.
Immediately after you hear the startup tone, hold down the Shift key.
You should press the Shift key as soon as possible after you hear the startup tone, but not before.
Release the Shift key when you see the gray Apple logo and progress indicator (spinning gear).
To leave safe mode, restart the computer normally without holding down any keys during startup.
If after that, you were still not able to get into your operating system, the last step would be trying to reinstall the operating system.
Mac OS X 10.6: Reinstalling Mac OS X
http://support.apple.com/kb/PH6606
Regards,
-Norm G.