You have a few options:
1) Find somebody with a hot rework station to try and fix it
1a) Look up the ghetto home oven reflow technique - it may create other problems
2) Buy a replacement motherboard on eBay
3) Smash it into pieces
For all options consider copying important **** off the main drive first
because I have mucho time to kill for a few weeks
and the weather is so crap I can't ride
decided to get back to this project
bought a mobo on ebay, got it yesterday, put it in
checked that the numbers matched and very careful install
no bueno...will not POST up
asked seller for an RMA and was surprised with his prompt and agreeable reply
it's on it's way back
put the old mobo back in just to tidy stuff up before tossing this POS
and just for chits and giggles, hit the power button, damn, the thing booted
connected it to the wifi and it ran through 9 months worth of MS update crap
unplugged it, bam, instant off although reporting 96% battery charge
plugged back in and completed the OS and app setups - humming along without skipping a beat
so the issue with this mobo is apparently in the battery circuitry - it is now a desktop
I should really learn me some apple OS and get away from this PC crap
but I just hate that OS