just recently built my new system.
ASUS P5N32-SLi premium
Intel Core 2 2.67GHz
GeForce 8800GTX 768MB
everything worked fine for about a week until yesterday. when i turn on my computer the monitor goes directly into sleep mode. i have a keyboard that is backlit with LEDs and it does not turn on. no motherboard beep on start up either. i had the same problem a few months ago and i fixed it by unplugging the monitor power cord and then plugging it back in and it worked. this time i tried the same thing and it didnt work. i also tried unplugging everything inside and resetting my graphics card a couple of times but still nothing. i am 100% positive that my motherboard and everything else is powerd correctly and sufficiently (750W PSU). i have a hp pavilion f1903. im very good with computers and i have NO idea whats going on. i dont see how it could work one day and not the next without me even touching it. i found that anything i plug into my motherboards usb ports dont turn on either (i mentioned the keyboard). i have my mouse in the PS/2 slot but when i put it into usb it doesnt work either. also when it is in the PS/2 slot the lazer will not turn off. <--really stumped!!!!
please any help would be great