No power to kbd, mouse, or monitor

I recently moved an older HP Pav about 1500 miles and after setting up at the new location, I get nothing on the mouse, kbd, or monitor. I have checked all three peripherals on another machine and they all work fine. My HDD, CD-RW, and DVD-RW all spin up and disks are recognized in the DVD and CD drives. The HDD light comes on and stays on indefinitely. I get no indication of power to the monitor…i.e. it appears to be in stand-by mode(amber light).

I have unplugged and plugged back in all connections from power supply to MB and all drives as well as ribbon cables and PCI cards. I get no beeps or anything when powered on.

Video card? MB? HDD?

Thoughts?

Thanks for your assistance.

Josh