Macbook pro will not boot from internal drive?
I recently took my mid 2009 macbook pro apart to clean some coffee spillage. The computer worked fine even days after the incident, but the keys were beggining to get sticky, so I decided to clean it. After re-assembling the computer, I discovered it would not boot from the internal drive, but it would boot from the same drive connected externally (via usb).
However I can get it to boot using the internal drive, after removing most of the screws attaching the bottom lid to the unibody. Once tightened back up it will not boot from the internal. I have already tried multiple bootable drives, with the same conclusion.
I'm guessing the screws are sorting the drive out. Has anyone else had this problem.
Thanks
MacBook Pro (15-inch Mid 2009), OS X Mountain Lion (10.8.3)