ever heard of an enermax PS not working with a mobo?

[busterG]

I have a shuttle ak31a and for some reason it will not run on enermax power supplies. I tried both a 350w and a 431w model and neither would allow the computer to boot. Fans spin and the drives spool up but i never even get to the bios. I have switched to another ak31a and it seems to work fine with the enermaxi but the origianl board will only run with my 2 other generic power supplies. has anyone else experienced this or have a clue as to what it is? I want to use the older mobo because i can get almost 100mhz more out of that one when overclocking.

Any ideas?

 

[o1die]

I believe you should simply stick with the power supply that works best with either board, and either sell or return the enermax. I have 3 power supplies, and I use the lowest rated ps (235 watts) because it keeps my cpu temps 3-5 degrees cooler, and has a 5volt rail reading of 4.92-4.97. The other 2 are just spares.