HP 62 WONT BOOT

I have an HP G62 Labtop recently it was in a backpack which fell from a top bunk bed hit a chair then hit the floor. Now when I try to turn it on I hear it power up but it doesnt boot and the CAPS LOCK KEY just blinks constantly. I tried plugging in a flat screen monitor and turned it on and I just kept getting a message saying NO SIGNAL! Im hoping that someone could give me some idea of what might be wrong it seems like the hard drive is not engaging!