Understanding whether your Windows PC is running a 32-bit or 64-bit version is crucial when installing apps. Many programs offer both 32-bit and 64-bit versions, and selecting the wrong one can ...

It is, though, important to know whether you are running a 64-bit or 32-bit version of Windows when performing certain tasks on your computer.

Will my programs still be compatible? Answer: The short answer is yes. Windows 7 64-bit has backwards compatibility with most 32-bit programs. Just start installing them — they should work fine.

Identifying a 64-bit version of Windiws 8. If you’re running the 32-bit version, you can launch a DOS program by simply selecting the .com file.

If you're not really sure whether you've got a 32-bit or 64-bit OS, we detailed how to find out in our 32-bit vs. 64-bit guide. Share more details on your OS decision—if you chose your version ...

Many programs offer both 32-bit and 64-bit versions, and selecting the wrong one can lead to installation errors or poor performance.