I just bought an ECS KT-600a with an AMD Athlon XP Barton 2500+ as a package deal, along with an appropriate CPU fan. Everything is plugged in fine, as when I turn the computer on, all devices show evidence of being powered, however, I don't get so much as a POST, no beeping, nothing. I've cleared the CMOS and tried different frequency jumper settings but it doesn't make a difference. It's an enigma to me, but maybe you guys have some good ideas, please?