Hard disk problem.

Alright, so I'm in safe mode right now and my computer works fine in safe mode, but recently I've been having problems with my computer in regular mode like it's just extremely laggy and it'll freeze up, it's a relatively new laptop only two months old. I'll get this random box showing up saying I have a hard disk problem, so what do I do?

 

I don't know which version of Windows you're running but open a command prompt and at the C:\> prompt type chkdsk C:\. You may have to restart the computer. Chkdsk runs before the OS loads. Any problems it finds with the hard drive will show up on screen. Post those results back here and the experts may be able to direct you in the appropriate course of action.