POWER MAC G5: 3 BEEPS AND BLOWING HELP!!!

Alright. I haven't had any problems with ANYTHNG for many many months, but last night I was working on a project in final cut pro, and I noticed how late at night it was, so I just put the computer to sleep and turned off my speakers, however I accidentaly pushed one of the speakers and it hit the top of my power mac G5. I went to bed afterwards thinking that everything would be fine, but once I turned it on this morning, it froze twice on the startup and now it keeps giving me 3 beeps and blowing like a jet engine. I did some research and they said that it checks for the RAM but it has been perfectly fine. And I most certaily do not want to go back into my computer again because I remember having similar beeps when I attempted RAM increase 6 months ago.
Please help me on this! Thanks to all of you. 😀