Hi Everyone, My 2010 MBP was working fine this morning but wouldn't log me in this afternoon. When I rebooted, I saw the folder with the question mark. Then I booted off the install disk to get to disk utilities but my original boot drive did not show up so I assumed that the drive was dead. Then I swapped that drive out for another one. Here is where things got strange. I can no longer boot from the install disk. I hold down "c" on boot and nothing happens. I also had a backup of my old drive using CCC but when I boot into the backup, the screen lock appears but I cannot enter my password. No letters show up when I use my keyboard. Any suggestions? I need my computer for my schoolwork so this needs to be fixed ASAP. Thanks in advance!