Which Windows operating system am I running? How Do I Find My Model Number or Product Number? The more information you can provide, the better! In addition, it will also help if you indicate which operating system you are using and whether your operating system is 32 or 64 bit. Below is a is an HP Support document that will demonstrate how to find your computer's product number. I have read your post on how your desktop computer is displaying an error message 'Another instance is running', which typically means an application cannot run in duplicate. I would be happy to help you, but first I would encourage you to post your product number for your computer. Hello to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
