Blank Screen ... again ...

I am in the process of building my next generation of gateway/server. (I think its my 5th or 6th physical box.) I started with version 6.6.0. The install ran part ways and then I encountered the "blank screen" problem. It tried all the checks and possible fixes I could find in the support forums. No success. I then went to the new 7.1 version. Same thing. I was going to try the 6.5 version, but couldn't find the old ISO.
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Any suggestions?
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My new system is based on an AMD A6-7400K processor.