Mac Pro froze now won't turn on
I plugged a usb cord (prom an Epson printer) into my 2008 Mac Pro, next thing I know everything is frozen. Turn off the Mac Pro now I can't get it to turn back on. I've unplugged it from electricity and retried, I've taken off the two exterior hard drives that were connected via firewire and the usb printer, nothing seems to be bringing this computer back to life. Any ideas or suggestions? The computer was working completely fine a half an hour ago.
thanks jeff
mac pro 2.8 2008, Mac OS X (10.6.4)