Are you using a USB keyboard? Could be that the the board is set to run the keyboard in 'bios' rather than 'OS' as there is a known bug with this setting. If you have a USB keyboard, make sure u set it to 'OS'. Also, with your memory, make sure its getting enough voltage... the corsair dominator needs more than 1.8v stock doesnt it? If its anything like my cellshock the board defaults to 1.8v despite the fact that its stock voltage is 2.1v.