MacBook Pro is frozen at the grey screen with apple logo, progress bar applears to be at 100%. How do I fix this ?
Macbook Pro(15-inch, mid 2010)
Processor 2.4 GHz intel Core i5
Memory 4 GB 1067 MHz DDR3
Startuo Disk MacintoshHD
Graphics. Nvidia GeForce GT 330M. 256 MB
MacBook Pro (15-inch Mid 2010), Mac OS X (10.7.5)