Nothing showing up on monitor

I'm a software guy temporarily forced into a hardware position. On Monday, I came to work to find that one of our servers (windows 2000 server, 1 master drive, 1 slave drive, graphic card, network card) wasn't displaying on the monitor and keyboard wasn't responding (LEDs not on).
Through exhausting efforts (monitor worked fine on other systems, graphic card worked fine on other system, keyboard worked fine on other system) I still couldn't get a display.
I put master drive into other system as master and when 2000 booted up I got an error (0x000007B - not a bootable device). I also put it into other system as slave and couldn't see the drive (coutldn't see it in an FAT, FAT32, and NTFS system). I could see the other drive (slave drive mentioned above) in another system.
Do I have a mother board or CPU problem or both. Can a crashed hard drive cause no display on the monitor? Seems like it would still display but give me that 0x000007B error.

Thanks

i have the same thing happening to me ... i've tried just about everything i can think of.. even changing the motherboard and graphics card... i dont see how this is possible to hold the same problem after a motherboard, cpu, and graphics card change. but i guess it is... maybe its a lack of power?

　The Only exception is Compaq which has its daughter bios in harddisk.

But there is possibility that your hd is inhabited by boot-sector Virus.

Consult this also spyware-forum. The primary hd must be physical-formatted by Maxtor, etc.