Hi there my specs asus crosshair athlon 64 x2 5000+ 4 Gb Giel ram 2x Geforce 9600 in SLI Silence 800watt PSU One day my machine shut down on its own. (no warning) now it will not even post. at first i thought it might be my PSU. but i have tested with another PSU and the same thing. the board powers up when you switch on but does not goto post. i am now left thinking it is my mobo but not sure. i was wondering anybody could help shed some light on this problem before i go and order a new mobo. if you need any more info let me know.