hi, i had a problem with one of there mobos also.i had a burning smell to but fortunately it didnt burn anything out. sounds like same problem. my mobo was shorting out where the screws go into the case. so i took that static bag that came with my mobo and i cut two squares out for each screw and i put one on top where the screw bolts down and one on the bottom and bolted my mobo down. it took care of the problem. i hope this helps.