Also, about Windows 7, I'm aware about XPDM support. I used to use Windows 7 on it. I saw this thread and decided that it might be fun to try out Windows 10 on it.

2007, but I am using a modded BIOS to bypass the hard drive check that these older ThinkPads have, the original BIOS said 2005.

I got Windows 10 successfully running on my ThinkPad T43.
104770
(Sorry about the pink screen, the backlight is shot)
It has a Pentium M (which is essentially an enhanced Pentium 3 with NX bit...