It would help to KNOW what happened FIRST...doncha think?
I assume the system WAS booting prior to the failure and message?
If so...then you need to see if your hdd failed...or if a cable came loose to your harddrive. check your connections at BOTH ends....at the hard drive AND at the motheboard connection point!
Also make sure your your bios is OK..ie it didn't randomly clear the cmos and needs to rediscover your components during POST...Power On Self Test..
If you were successfully booting prior to this..what changed? Did you connect a flash/jump drive to a usb port and leave it in while booting?? Be sure to remove all thumb/flash/jump drives and any other external components that you might've added prior to the failed boot...did you just delete some files...maybe some system files....maybe the bootloader?
There's a reason it failed and you need to troubleshoot that first so that you do NOT reinstall the O/S only to have it fail again in a few days, a few hours, or immediately after reinstalling the O/S!
Also, if you do get the hdd up and running run the tools provided by the hdd manufacturer ie....seagate or western digital or samsung...they ALL provide a set of tools to check the harddrive for bad sectors..failing hdds, and errors on the hdd's!
This will help you determine what failed and maybe...why it failed!
All that will help you NOT waste time trying to reinstall your O/S (operating system) only to find out it wasn't the problem!
Good luck and post back as to what you found if you would