Just purchased a Althon X2 4200+, KN9 SLI, and 2x512MB 4-5-4-15 2.1V OCZ DDR2-800 RAM from newegg, but the ram is really flaky -- one stick boots in slot 2 or 4, but the system doesn't turn on, and doesn't beep if it is in slot 1 or 3. The other stick just beeps as if no memory when in any slot...