Do you know which version of Windows you are running? A lot of non-technical users don’t. But it’s easy to find out.
Click the Start button in your lower-left screen. Then click Run, or All Programs/Accessories/Run.
At the prompt, enter winver and click Enter.
Windows should then pop up a window which shows what version you are running, and which if any service pack (SP) is installed.
If you need to know which versions of QuickBooks work with which versions of Windows, here’s a chart.