I brought My Macbook Pro last year in november (Latest Model available then) and suddenly today started to show a question mark?
Is it a folder icon with a question mark? That means it can't find the operating system to boot from!

Generally speaking, this would indicating a failing hard drive. There is a possibility you have lost some data. However, it could be just a case that some of the files have been 'misplaced'.

The best way to get on top of this would be to immediately run Internet Recovery and/or use Disk Utility to try and repair your computer.

See:


Mountain Lion - OS X Recovery
HT4718 OS X: About OS X Recovery