Is my hdd coruppted\fried?

Ok so my stupid self knocked a tv tray on to my ps3 slim while I was playing a game. It froze up, so I tried to turn the ps3 off. But, the light just kept flashing green. So, I unplugged it and plugged it back in. Then I turned it on again and a message popped up saying "the system cannot start the appropriate system storage was not found." Hopefully, I just knocked the hdd loose, but I don't know. Tomorrow I'm going to try and take it out and put it back in, but can someone please help me? idk what's wrong with it.