Home Forums Hardware Mac Desktops & Notebooks Mac Pro won't boot up...hardware?

If the Mac Pro starts up as expected when Safe Booting, then I wouldn't think the problem lies in the disk, battery, or other internal hardware.

To clarify what you've tried: when you did the Safe Boot, were your peripherals connected? And the Mac started fine under those circumstances? Also, you tried a normal boot with peripherals disconnected, and that didn't work?