From what I seen the motherboard was all polymers with some electrolytics down by what I presume is the sound chipset probably for output filtering, even if those went bad I don't think they'd take down the board.All the electrolytics on the MB looked fine.
Ironically I "visited" cap factories in China 2004ish to make sure no faking from our guys.
I loved the pics of the small lower volt caps stuck in a larger can!!