Check out your scsi chain. If the scsi cable is bent that may prevent booting. Do not lose the faith! Check out your ram modules. Press ESC key and see if that works.
Never ever push on top of the PPC chip. You can press slightly the 060 chip but please be *very* careful. Don't try to save money making strange tricks to keep the cpu pushed against the socket. If you see that applying a slight presure your computer boots you should thinka bout carrying it to an experienced technical service and ask them to resolder the cpu socket. Remind them that the cpu cpu socket is SMD.
But I hope it's not a big problem and you can resurrect your board. Don't get nervous and be patient. Speed kills so take it easy, discharge yourself from static electricity before touching your miggy and take out all the cards but your turbocard.