Maybe you should bang on it real hard with a hammer. I have also found that kicking it will work if a hammer is not available.
Had to laugh when I read this. I was helping my friend over the phone one night with her computer. She had been at it for hours and was exhausted. I was taking her thru it all step by step trying to get a clean boot, til I finally said, "Now you just kick it really hard." In her state, she missed my humor, kicked the damn thing, cracked the case and said, "you didn't really mean that did you?". Her new computer worked fine, so I guess in an odd way I did fix it!