Hello, I have an Athlon 2400+ on a Asus A7N8X-e deluxe mobo. I also have 2 DDR 400 512 mb sticks installed. The system was identical for the past year. Today, while browsing the internet I heard "System failed memory test" in my headphones and the monitor shut off. I could still hear the PC working (at least the fans) and also the red light on the front of the case. I shut down the PC, and of course it won't come back up. Any ideas what could be wrong? I tried removing the DDR sticks and reinstalling them, but without any effect. Thanks.