is your UD5 like my UD3, in the way that when you first get into the bios, it's set to some very low memory speed? it's like defaulted to some low memory speed? So you probably went in there and set it to manual so you could set it to the correct speed? Well i was playing around with different settings and it automatically assumes you're trying to OC but i just set it to the SPD settings that you can see there in manual memory setup mode. Now it boots fine. But if i set it to a slightly higher speed, i noticed it tends to freeze right there after the windows logo is like pulsing. There's articles on OC'ing that tell you just that, if you're OC'd and freeze there, you either need to boost voltage (at your own risk) or reset it lower. Anyways, not sure if that's your problem, doesn't sound like it since you just built it, but i thought i'd throw that out there LOL. I've never seen an Nvidia card freeze up the windows screen at the beginning from driver loading, and believe me.. i loaded a lot trying to get BF3 running well LOL. You are using the PCIex16 slot right?
