Today I came home from work and turned on my Mac Pro. At first everything appeared normal and I walked away on a call for a few minutes. Out of the corner of my eye I noticed the screen was flashing to black off and on. I turned off the tower to try and restart it and now it wont boot! I have removed all other hard drives aside from the boot drive. Re-seated all RAM. Tried various combination's of RAM. Tried to load the snow leopard install only to get a kernal panic. Tried again with just RAM and received a kenal panic as well. Does anyone have any ideas of where to go next? I need to get this back up for a client deadline. Thanks in advance. *Update* It seems that the RAM when I swapped it out was VERY hot for only being in a short period of time (under 10 min). Not sure if this helps.