Just bought myself a new gaming rig for a self build. Running - Asus Crossfire III Mobo G.Skill PC128000 Memory AMD Phenom X4 965 BE Nvidia 8800GTX XXX 768 Graphics Card Coolermaster V8 cooler Generic 900w power supply When I plug everything in the lights all come on, the ROG symbol pulses and the Power\Reset switch illuminate. When pressing power the system turns on for about 1 second before cutting off and displaying POWER_OFF on the LCD post screen. If i remove the power from the graphics card the system will power on for 3 seconds and squeal before turning off signaling the graphics card is missing ( due to no power), Same if i remove the memory. Some things i know - - The board is rated for the CPU + Memory - One single Nvidia card will work in the board fine - The memory is rated for the board and in dual channel configuration (slots 3 and 4 due to cooler size) - Everything in the system is brand new - I have NO spare parts to test as this is a new upgrade from an AM2 DDR2 system Does anyone have any ideas what could be the problem? im thinking perhaps lack of power to the board? Have seen a 1000w power supply @ PC world (dont hate me, its 30 seconds from my house and I need one by saturday for a gaming event) But dont want to wase cash on it if its something else. Main reson I think this is that the mobo need and 8 Pin EPS supply and im running it from an adapted Molex using an adaptor from Maplin Electonics I have also tried resetting the CMOS by the switch on the back. Can anyone think of anything else?