Vista wont boot from HD..HELP!

Ok, so let me start off by saying how much I HATE ATI! Iv been trying to install 2 cards in crossfire which let me to this problem. Anyways.. I was getting BSOD from the 2 cards and just bullsh*t errors and now I start my pc and it says "Reboot the select proper boot device or insert boot media in selected boot device and press a key".. Iv been into the boot sequence because thats what I thought was messed up and there is only boot from cd/dvd/lite-combo and thats it, and obviously disable that, also boot from other device is set to YES. I dont know WTF happend! I dont know why I decided to go ATI! Iv been an Nvidia person forever.. anyways, If anyone know what I should do. I dont have a vista reboot disc.

Any help would be great!

-Chris

Also says "CMOS setting wrong" not sure if that has anything to do with it..