i removed my old POS power supply and installed my new xconnect. i have everything connected turned it on and i get a loud beeping noise. i disconnect everything and only connect the 12V connector and the main power connector for the mobo. still the same thing. i cant tell if its the mobo or PSu thats making this really loud long beep noise. i have an AMD 64bit 3000+ w/ Asus K8N mobo. 1 gig ram. any ideas?