Folder with question mark when starting up
Today, randomly, when I opened up my Mac (I always leave it in sleep mode) it just showed a white screen with a folder with a question mark. Tried rebooting, same thing. Then I tried to boot in recovery and went to the Disk Utility, but my hard disk is not listed there so I can't repair.
My warranty expired long ago, this is a MacBook from I think 2012 or 2013. I think my hard drive is fried. What should I do?
MacBook Pro, OS X Mountain Lion (10.8.2)