I would bet that a resitor across the +12v would give it enough load to 
start and run..

Rick Barnich wrote:

>Stephen,
>Have you considered removing the fan from a micro or flex ATX power
>supply? The 533 MHz ITX appears to dissipate about 20 watts(30 watts
>including the power supply) in operation. Since many of these power
>supplies are rated at 145-185 watts, running an ITX isn't much of a
>load. The only problem I've encountered is that most of these require a
>minimum current(typ. 200ma.) on the +12VDC line. Most of the ones I've
>tested won't start on power up. My theory is that they are designed to
>run disk drives in addition to the motherboard and with no load, the
>+12VDC line exceeds the over voltage protection level, and shut down
>immediately. I've seen some that will run for a short period of time
>before shutting down. In all cases that I've tested, they do work
>properly when a hard drive or two are added to the system( ie. load).
>I'm looking into what modification is required to make them work with no
>12 VDC load. They're cheap and readily available. I'll keep you posted.
>
>Rick Barnich
>
>
>
>
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