Datter, I haev not. I coudl get Asus' attention by posting a bad review at Newegg (I think it is called "coercion" ...
and they contacted me via email (and a voice mail I returned but can't get them to call again) and the technician said he succesfully installed Win7x64 on a M4A78 plus, showing me the screen shots to prove. Nice and dandy, but doesn't solve my problem. He offered to test my board itself, but they stopped responding when I asked where to send it. Maybe I need to post yet another review...
In the meantime I tried other things (I had already tried with 1x2G stick and 1x1G stick from the other computer that runs Win7x64, tested memory extensively with Memtest, no difference). I installed and ran Windows PE (Vista based, Windows 7 based won't work eithe, it is definitely relatd to Windows 7). Under the WinPE nvironment I could run the setup and had a Win7x64 in one of my drives. Guess what, it doesn't boot! it stops at the very same spot. I also tried a VHD, same story (at one point I had 7 distinct instances of Windows 7 installed, only the x86 working). I tried to replace the boot.bin file in the Windows 7 ISO file, since that is known to cause problems (see UNAWAVE - Code 5 Error whilst booting Windows 7 DVD
), but it gives me an error when booting, I don't have a Vista 64 boot.ini I can use, so my resulting DVD was not good.
I've just about given up. I removed all "attempts" from my drive (I left one just in case) and I am running Win7x86. I wanted to be able to use more memory, but it is not looking worth it anymore. If Asus will take this board back and replace it I will do. I won't send it back for testing, I am afraid I will end up with the same board and a few dollars shorter on shipping charges (I already have more than 10 useless installation DVDs with every configuration you can think of)
Datter, what is your system's configuration? Maybe we can find some sense in the common elements. Although I have seen posts about this problem in very different systems.
Thanks evrybody for trying to help so far.