I am trying to install the Realtek HD Audio (R215) driver for use wit my Supreme FX II onboard sound card (Asus Rampage Formula) but once I have installed them and rebooted I get an error message saying that 'device cannot start (error code 10)' and the onboard sound has disappeared from the sound section of the control panel. I am using Vista 64bit and as soon as i search for the updated drivers it re-installed MS driver and all works as it should. Any ideas for me please - it is driving me crazy!!