Can someone point me to a good source for diagnosing motherboard failures, or do I have to return the boards to the manufacturer? I built a PC for a friend with an MSI K8N Neo Platinum board and have had two separate boards fail using two different power supplies, even after burning in at my house with testing software. Can attached peripherals or the case itself cause a mobo to completely fail, assuming proper incoming power and temperature are controlled? I've built many PC's and haven't encountered a problem like this before. Thanks.