I put a hard drive which had Windows 2000 installed into another PC (not the same manufacturer + not very different hardware) with the intention of reformating and re-installing Windows 2000.
I didn't get the boot order right so the PC booted from the hard drive. I let it continue to see what would happen. To my surprise, it booted OK and didn't report any driver problems. It seems to work OK. Should I re-install Windows 2000 or leave it as it is?