sound to me like your board or cpu is fried, sorry.
that's a little bit beyond my skills...however i do know you can like reset to bios or whatever by setting the jumper to 'clear cmos'. then turn on the machine...
usually when 2 identical machines act differently it means 1 is broke, but if you don't want to give up, search for the 'answer file' online for the version of windows that you want. it's called autounattend.xml or i can make one for you. or you can make one for yourself by downloading windowsAIK....
good luck...but i am worried that the board is fried, because i'm out of ideas.
Both Motherboards are the same and I get the same result. I can not install windows to either. I checked out the Windows AIK and it is for The Windows Automated Installation Kit (Windows AIK) helps you to install, customize, and deploy the Microsoft Windows Vistaâ„¢ family of operating systems. And Validation is required.
Well I have only had a Vista OS for about 1 week and I deleted it and installed XP. I did not have a OS Disk as it was on a hidden partition which I also deleted, I just have the serial number, but I have no intentions of ever installing Vista ever.