Processor Problem?

I've owned an KT7 Raid motherboard for over a year now. It's worked delightfully until recently. About a month ago my system crashed. Since then I have not been able to install any operating system on my machine. I believe the problem lies in my motherboard. I've used Win 2k, Win ME, Win XP Pro, without any problems. Now I can't install any OS without error messages. More specifically, when setup begins copying files it says can not copy file. I flashed the bios with the newest version. I replaced both hard drives in my raid configuration. I replaced my CD ROM drive. I've tried installing with every method possible. The only thing I can conclude is that somehow my motherboard is causing this dilemma. Have people complained about this problem? I've worked on many computers and have never seen a problem like this. My motherboard is only a year old. What could be causing my problem? My computer has been out of service for over a month.

Bryan
tech_md@yahoo.com

I have not tested the ram. I will get the program and test the ram. ASAP.