Q: dropped laptop only shows file folder with question mark flashing

Can you start it in Recovery Mode (boot with the cmd and R keys held down)

Restart from a Mac OS X install DVD, external drive, or Apple's Internet Recovery system(if it's available on that Mac), open the Disk Utility, and see if the internal drive appears.

If it does, try repairing it.

If not, the drive is probably dead; in this case, any data on it can only be recovered by a service such as DriveSavers.

(143774)

Once you determine the drivers okay or not:

Startup – Question Mark

Startup Issues - Resolve

Startup Issues - Resolve (2)

Startup Issues - Resolve (3)