Help!! Mobo probs!

I just purchased the Asus AMD AthlonXP A7N8X Deluxe mobo, along with the AMD AthlonXP 2500+ "Barton" 1.83ghz processor. I connected this in my case, and connected my hard drives and cd-roms. I turned on my system, and went to boot up windows, and got a stop error. So, I decided to install XP again, so I went into the BIOS to change the boot order. I changed it to cdrom, so that cdrom would boot first. I then put the winXP cd in my cdrom drive and saved changes and rebooted... and it did NOT boot from cd-rom. It also checks my RAM 3 times on the post screen, instead of just one time. I had no problems booting up from linux on my other hard drive, but I cannot boot from XP at all. What should I do? Btw.. since I could not install XP by cdrom, I was forced to install XP to my hard-druve using a different computer. Hard drive is by western digital, and cdrom is by philips. I have 1 stick of 256ram. What should I do to get it to boot from XP?

Alright, first off, thanks for replying. I did what ya said, about the boot order. It does not boot from cd-rom, because I never see the message to boot from cd-rom. It will go all the way and say booting from operating system, then it will try to access the floppy, then it will give me an error like this: PXE-MOF Media unavailable.. check cables. I have checked cables, jumpers, switched cables, and bought new jumpers. It's not the cables that are broke. Whats wrong? Thanks, - Scott

I found out how to reset the CMOS memory like you said, but how would I load setup defaults?