Apart from pointing to the Wiki (easy answer) you could try to see whether it simply can't understand your video setup. That happened to me with a nForce 630a and it's onboard Nvidia 7050 card. Try, before booting, to specify VGA in safe mode. Those beeping noises are the AVWizard, try pressing left shift for a a couple of seconds, and it may just display it for you. Go for the most basic of settings, that might help you along. Otherwise, press ALT-F2 or so, to get into a text console.