that's good news indeed, that Windows Setup screen (the 'first' pic in post #18) is indeed the screen we have been hoping for.
so well done Sir on that front.
and yes, use the 640GB drive (the 3rd one) as it is the only SATA one you have it seems. it's almost 10 years old, but that'll be fine.
at best, it'll out live both of us, at worst, we only want it to prove we can do want we intend before lashing out the money on a SSD.
don't worry about the reduction in capacity from 1TB to 640GB - I doubt you were using much on the old drive anyway.
so yes!, whack it in and it should simply boot. eventually when Windows kicks in, it'll say "bloody hell, all my hardware has changed" and want to update drivers and then notice that Windows is inactivated due to all those hardware changes.
see how that goes and that'll determine whether you reload Windows from scratch.
the next hurdle on the horizon may be product activation - but tiny steps first, let's jump the immedaite hurdles first!
so well done Sir on that front.

and yes, use the 640GB drive (the 3rd one) as it is the only SATA one you have it seems. it's almost 10 years old, but that'll be fine.
at best, it'll out live both of us, at worst, we only want it to prove we can do want we intend before lashing out the money on a SSD.
don't worry about the reduction in capacity from 1TB to 640GB - I doubt you were using much on the old drive anyway.
so yes!, whack it in and it should simply boot. eventually when Windows kicks in, it'll say "bloody hell, all my hardware has changed" and want to update drivers and then notice that Windows is inactivated due to all those hardware changes.
see how that goes and that'll determine whether you reload Windows from scratch.
the next hurdle on the horizon may be product activation - but tiny steps first, let's jump the immedaite hurdles first!