Let me provide some information on why your PC stops working and guide you on what to do, tlehman1.

Ideally, if your computer meets the system requirements and if you're using the latest browser and operating system, you'll be able to use QuickBooks Online (QBO) without issues. Have you tried using a different computer aside from Lenovo Yoga? This way, we'll be able to isolate the issue if this is only happening once you use Lenovo or if the same behavior is also happening with other computer devices. 

You'll also want to reach out to your IT guy to double-check if there are factors why this is happening. You'll want to verify your internet speed (bandwidth) is not limiting your QuickBooks Online experience. Run a Google Speed Test to confirm your bandwidth/the speed of your connection.

For more information, to know about different aspects of your business, consider running a report and customizing them to get the information you need. Customize Reports In QuickBooks Online.

Reach out to us if you need anything else about invoices and journal entries. We're here to help you.