Hardware upgrades on 12 year old stationary PC

[Barney [CA]]

There are two Versions of that Mainboard, Rev.1 and Rev.2 which was quite common back then iirc, dont know how its nowadays.
Can barely spot the difference, but Version two needs Bios 2.0 or 2.1 which is not a newer version of 1.x:
msi-bios-for-P35_Neo-F-with-MS-7360-and-version-2.html was simply the wrong board.
Rev. 1 needs Bios 1.x.
Can get frustrating if things dont work right away, but in the end you now got a decent upgrade for 50 bucks and "only" one or two days hassle...
good everything works now and hope it survives a few years