I have recently purchased some parts for my new comp. I installed them in my old case and things were a bit wobbly but working for a while. Then i performed a Start->shutdown for the first time, and the comp went off, and would not come down (all previous resest were by software installs).

Nothing would happen when i switched on the power - no case fan, cpu fan, cdroms lighting up, hard drives spinning, etc. Someone suggested that my psu may have blown a fuse as the new components required a high wattage. I bought a new case, with a 300W output (should be sufficient) but still no joy.

The situation so far:
old motherboard works on old case (psu _not_ blown afterall)
old motherboard works on new case
new motherboard does not work on old case (suspected psu blown)
new motherboard does not work on new case
i can get the cpu fan currently mounted on the new motherboard to start by attaching it to the pins on the old motherboad (cpu fan ok)

new equipment: old equipment:
FIC AZII motherboard FIC something i think
AMD Atholon 950 Celeron 300A
512M 133 Ram 128M 100 Ram
Creative Geforce 2 Creative TNT
+
cdrom
cdwriter
floppy disk
hard disk

Is there anyway to confirm that the problem lies with the motherboard? Are there any things i can do to attempt resurrection? i have heard a few things, but can you confirm/suggest more plus evaluate their helpfulness?

reset jumpers?
more current to case?
some kind of current meter on motherboard?

Thanks in advance http://www.PCGuide.com/ubb/smile.gif

Motherboards are about the toughest hardware problem to troubleshoot, but it seems you've done about all you can do. If the new board won't work in the old case, which has a good power supply, it seems the motherboard would be bad. Even if the power supply wattage is too low, with only CPU, RAM and video card it should be enough to get a picture...it's only after you add hard drives, floppy and CD ROM along with other cards that higher wattage is a serious issue.

I think about the only other thing you can do to prove it's the motherboard is to have a computer shop check it.

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Soon as I come up with all the answers...they change the questions!!

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Make sure that connections MOBO - case are done properly. I happened to have same problem and it turned out to be an error in MB manual. Where manual was showing connector 1,3,5 etc , it was actually 2,4,6 etc.

Ta da!!

After some in-shop advice i am now up and running. My old problem is fixed, and new i have a whole set of new problems to play with ;-)

The problem was that i had to connect up the power switch on the front of the case to the corresponding jumpers on the motherboard. I was trying to connect up the psu to motherboard without doing this (just for testing), with obvious results. You can test the power by shorting the jumper temporarily out of the case, but once it is in the case, you must make sure that jumper is connected to power switch. I spose its easy once you know how :-)

Cheers for everyones help.
Gareth.