help!!!! pc not booting.....

hi all please please can some one help me.
Im running: asus pk5 prem blackpearl motherbored
Q6600 cpu
2gb ocz reaper 1066mhz ram
9600gt grfx card
clio great power x14 650watt psu
tuniq 120 led cooling tower

I had built this system up about 2 days ago and at first ran well. but just before it stopped working the usb ports stopped working 1 by 1 then ethernet ports stoped working then it just packed in all to gether. fearing that i had shorted out the bored i removed it and rebuilt it but still no joy. i sent off the mother bored to get it bench tested and all seems good but what could the problem be? and how can i sort it wen the moniter dont even come out of standby? please help as im very cufuzzled lol

most likely your ‘blackpearl’ motherboard, i know it came back with ‘no problems’ but i wouldnt trust any company that takes a motherboard and wastes your money to buy rights to the Disney name so to sell at outragously inflated prices (probably worth a mere £80 without the tag)

take it back under warranty and get yourself a normal motherboard and buy the water cooling seperately