Hi there,
Welcome the QuickBooks Community. It's essential you're able to use QuickBooks so you can streamline your accounting with ease. I'll be glad to provide more details and help steer you in the right direction.
To get started, I encourage you to check out the following article that shows you how to: Move or reinstall QuickBooks Desktop to another computer. The article goes over the necessary steps required for you to achieve the goal you've reached out about.
Let me know if this info helps. In case you have other questions, don't hesitate to reach back in the comments below. I'll be one message away in case you need anything else.