motherboard replaced - but no boot!

In follow-up to an earlier thread titled "Replacing a motherboard...?"

Not going so well.

I ordered the replacement board from arsenal pc, changed everything
over from the old mobo to the new, all jumpers the same, same cpu &
ram... and now I have nothing.

The power works - it comes on instantly with a press of the switch (an
improvement already), but that is all I get. No video, just a flash of
power to the monitor when the psu flips on, and then all is dark, The
cpu fan is spinning, the 'hd activity' led comes on for a bit, as if
something is happening, but then I have nothing at all, just a dark,
idling pc.

No bios screen, no errors - just nothing.

ANy suggestions what to do from here?
I called tech support at arsenal - the only realy suggestion was that I
pay an additional $7.50 to ship the mobo back to them for
replacement... which I hate to do before trying everything on this end.

I already tried removing the RAM one stick at a time, and I have
flashed the CMOS as per the troubleshooting guide.

Is there anything (besides a defective mobo) that would cause this
situation?

.

Relevant Pages

  • Re: Apple G4 Workstation - Power up - light comes on - no power
    ... When you push the power button it lights up white but instantly goes ... Change the mobo of a G4? ... It will be much cheaper to find a whole well-functioning G4 replacement ... If you go for rev.C models my guess is that such one will work for more than 5-6 years more - time enough to transfer stuff or buy a newone for daily use and keep the replacement for older systems and apps.. ...
    (comp.sys.mac.system)
  • Re: NAS recommendations
    ... Assuming the Lenovo LCD burns 12w, an equivalent mini-ITX box would burn ... I had been thinking about replacing the NetVista with a low power mini- ... only burns about 15w more than a replacement based on the same Core Duo ... I picked a mobo that advertised 7W power - ...
    (uk.comp.os.linux)
  • Re: Dead PC - help please !
    ... (The machine has had two replacement PSUs under guarantee before - so I though there might be something in this theory... ... If it does turn out to be the mobo, don't just assume you can drop your old HDD onto a new mobo and have it all work, especially if you are running XP or 2000. ... TBH, if you are replacing the mobo with a different one, your best bet will be a clean install. ... 'restore' disks but it didn't come with the full install disk. ...
    (uk.comp.homebuilt)
  • Re: Dead PC - help please !
    ... unresponsive to any stimuli (keyboard, mouse, front panel on-off switch. ... machine has had two replacement PSUs under guarantee before - so I though ... motherboard with Celeron, ... HDD onto a new mobo and have it all work, especially if you are running XP ...
    (uk.comp.homebuilt)
  • Re: emachine
    ... I tried it again it workedok .Is there anything else I can try ... replacement MoBo if the PSU isn't replaced at the same time). ... a replacement PSU just might save the day (and ...
    (uk.comp.homebuilt)
Loading