Well, if your lucky it might just be a blown stick of RAM, or one of your other expansion cards. If it's causing a short, I've seen exactally the problem you've described. If you do have to replace the mobo with the same model, then you shouldn't have to reinstall everything. At least, you don't with Dell or Lenovo's, and I don't see why ACER would be different.
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If you become a monster to put down a monster you've still got a monster running around at the end of the day and have as such not really solved the whole monster problem at all.
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If you become a monster to put down a monster you've still got a monster running around at the end of the day and have as such not really solved the whole monster problem at all.