Extreme Case of No Video, No Boot - 3 different pc's w/ same problem

[jrozier]

First of all, I have a Abit VH6-II with a Celeron 600. I removed the board from the case, installed a PIII 1GHz and installed it in another case i had. After installing the mobo and chip in the other case, i have no video. The monitor doesn't acknowledge that the pc is on. The pc powers up and the hard drive is spinning. The pc worked perfectly with the Celeron600. Here is the specs:
PIII 1GHz FC-PGA
Abit VH6-II
256 PC100 SDRAM
20 GB WD hard drive
10 GB WD hard drive
Voodoo3 2000 AGP
Guillemot MaxiSound Muse PCI
BTC 8x DVD
Mitsumi 24x/4x/4x CDRW
3Com 56K Winmodem
SMC 10/100 NIC
I have another pc that has the same problem. This is the pc from the case i put the PIII 1GHz. Here are the specs:
Celeron 400
Abit BM6
WD 2 GB hard drive
64MB PC100 SDRAM
Samsung 56x CD-ROM
I/O Magic 8MB video
I/O Magic PCI sound

This pc worked fine before the swap.

Now here's the weird thing. I have a P100 with 32MB RAM that worked also. The only thing this pc didn't have was the 2 GB drive, because it was in the Celeron 400. I put the drive back in this pc and now THIS pc doesn't have video. It's been a total nightmare!

I've tried 2 different monitors and i get the same results, no video. Any help would be greatly appreciated

 

[Phooey]

What rating are your power supplies? You may not be giving the board enough power for it to do anything.
Phooey
Andrew.j.harrison@capgemini.co.uk
Otherwise known as Windy Bottom.

 

[jrozier]

All 3 Power Supplies are 250 Watt.....

 

[tlcscousin]

So are you saying everyone of them refuses to have video as soon as the wd2GB is included in the pc?

 

[jrozier]

I'm gonna check my hard drive ribbons once more and see if that fixes it. I'll post what happens afterward.

 

[dakota81]

If you're having problems like this, unplug all your peripherals (harddrive, floppy, cdroms, etc.), take out all extra cards (sound, modem, nic, etc.). Then try and get the computer to boot. You want nothing more than the motherboard, cpu, ram, and video card. If it works, then start hooking things up one at a time.