This system is a 2005 system and with some push can run Windows 7 32 Bit. It is not advised to spend any money upgrading this system, as it is cheaper to purchase a more capable Second Hand Business Desktop.
Operating System License
Windows 7 is no longer for sale and it is not recommended to run Windows 10 on this model.
amazon.com Crucial CT2KIT25664AA800
amazon.co.uk Crucial CT2KIT25664AA800
Solid State Drive 3.5 "
Upgrading to a Solid State Drive
The integrated Video Card has just below bare minimum for running Windows 7
Install the registry file and then the audio driver. New untested.