OK ... yes, I guess so.
Should I go back and change the value in Msahci back to '4'?
If you have had enough ... and are happy to carry on, leaving BIOS configured as "RAID autodetect/ATA", that is fine with me. It is unlikely to be of any significant/noticable loss to you. Continue with all your updates (Windows or DELL, as you see fit), the installation of AVG, and fitting your DVI cable to the monitor ... as mentioned in my previous posts, and you should be just about there.
If at any time later on, you can always continue with the challenge. I have not had the trouble we are experiencing here with the systems I have put together (but I use XP, not Vista), so I don't know whether it is a Vista issue or an Intel issue causing us grief. It has been a straight-forward installation of XP in ATA-compatible mode, get the updates from Windows, and then switch BIOS back to RAID ... and all was sweet. Ah well ...
Edited by AustrAlien, 28 November 2010 - 01:18 AM.