How to connect Lumia 925 and Lumia 520 to PC?

[Windows Central Question]

I have Windows 7 Professional installed in my PC but it can't detect our Lumia 925 and Lumia 520. Please help. Thanks.
- ernie

 

[Guytronic]

https://www.windowsphone.com/en-US/how-to/wp8/windows-phone-app-for-desktop

Go to the above link and download the Windows Phone app for desktop.