Hi all, I bought an Asus P45 motherboard, along with a CPU, RAM, video card and power supply slightly less than a year ago. Right from the start, the new configuration gave me issues, notably that the computer would spontaneously shut down when playing games. I wasn't sure which component was causing the issue, and the problem only occurred intermittently. Just a few weeks ago, the problem got much worse, to the point where the computer would shut down at any time, and finally it wouldn't boot up at all. I substituted a few components and worked out it was probably the motherboard causing the issue, and since I'd purchased it less than a year ago, I took it back to the retailer for repair/replacement under warranty. Apparently they sent it down to Melbourne to be repaired by Asus. A few minutes ago I got an email from the retailer saying: Dear Customer Please be advised that the below item(s) are warranty-void and irreparable. RMA# AUAA030649 S/N 8AM0AI316527 Model P5Q Problem Oxidation Please find attached snapshot(s) for more details. Should you have any concerns regarding this issue please feel free to contact us. Best Regards, Here is the photo that was attached. Click to view full size! Obviously I'm going to call the retailer tomorrow, but in the meantime, I'm wondering. 1. What causes oxidation on a motherboard? 2. Do you think it's reasonable that they'd refuse to repair it under warranty? The retailer is run by people who don't speak English very well, and their customer service isn't that friendly. I guess that's the price you pay for buying cheap hardware. Thanks for your help!