Vintage Compaq Deskpro EN

Hi, I am a vintage computer collector and I own a Compaq Deskpro EN and the BIOS Family is 686T3. I'm trying to research information on this computer and restore this computer to the Operating System that came out of the factory with it. Mine is a P600/10/64/NTC US. Did this system come with Windows 2000 or Windows NT 4 because the sticker is designed for either one. Due to HP's retired products policy, Can't get drivers for this thing. The serial number is [Personal Information Removed]
. I contacted computer surgeons to see if they could get the recovery disks but they couldn't. Any experts on Vintage models especially on Compaq Deskpros??