essexboy is correct here…though i think the rest of his post is wishful thinking 
You switched chipsets, you very rarely want to do that without reinstalling windows…even more rarely when you are booting from raid…im assuming this is raid0? You would want to some how get the raid drivers over to the windows installation. I can not think of an easy way to accomplish this but then again I mostly deal with online computer repair…not situations like this.
Edit: er I mean i cant think of an easy way without reinstalling windows =P.