Pretty certain Intel didn't include even basic EFI (Intel tend to call it UEFI) on 900 series boards. I think by around Series 4 boards they started putting on an incomplete EFI.
So if Win10 x64 does need EFI, then you're phishing in a phorce 10.
Thanks for the info
I bow to your vastly superior knowledge and will sling the guts of said PC in the gold recovery PCB pile
when i've got my arse in gear and migrated to the newer pc build
Who needs x64. 32bit is fine. A motherboard from that era probably tops out around 4Gb anyway, so absolutely no point going 64bit (64bit data structures are much bigger, so the OS and applications need more RAM to use 64bit. Also, although 64bit processing is slightly quicker, most processes still remain 32bit, and have to pass through a translation layer, meaning no noticable performance gains on a desktop OS).
So it will carry on nicely as a 32bit Win10 for a bit longer. I'd even say its worth splashing £30 on a 240Gb SSD as a boot drive... ...that'll boost its Windows performance better than 64bit.
The board has 4 DIMM slots and will take 4x 2GB DDR2-800 ,which I have ,but with W10 32 bit that gets limited to 3.5GB
an SSD would be a good idea but not worth the £30 out lay on this PC
I do have several newer, with UEFI ,DDR2, LGA775 boards knocking about that i could have built (and probably should have ) RATHER than the AMD AM3+ i just built
new PC boots super fast with the SSD ,well worth fitting to an older PC or laptop