[Webranger]

My PC is running Windows 7 Ultimate 64. My mobile is a Windows 'phone running Windows 8.1 (update 2) I have Dropbox synced between the two.
And yet the PC thinks that I have two other devices which I don't have and cannot recognise the Windows 'phone - even when they are connected by cable and that connection works perfectly well.

This is making it impossible for me to be active on Instagram (as one example although I did set up an account on a previous Android 'phone) and to connect apps I have on the PC to the mobile.

Can someone please tell me how to stop the PC seeing what is not there and see what is there?

Yes, I know that I will need to upgrade to Windows 10 which I know is needed for the Instagram app.but that is not the immediate problem.

 

[spunk.funk]

If you are talking about Devices in Devices and Printers, this shows all the devices that have connected to your network, including your computer (eg) Cable or Satellite TV box, Smart TV, Blu-Ray player, Printers as well as any other phone, MP3 player or computer etc. If these devices have ever connected to the internet from your router, they will show in your Devices and Printer. If they are no longer connected to your network they will be greyed out. If you no longer have this device, you can right click it and choose Remove Device.
This has nothing to do with your Windows phone connecting to your computer. When you plug the phone in, it should say New Hardware Found, and you must press Trust this device on the phone.
Go to Start/Search and type devmgmt.msc, right click the devmgmt results and Run As Administrator. In the Elevated Device Manager, are there any devices with yellow flags? Or under Universal Serial Bus Controllers, is there an Unknown Device? If so, right click this and Uninstall it. Remove the USB cable from the Computer End, Restart your computer. Once the computer restarts, plug the USB cable into the Back USB port of the computer (desktop) and not the front or through Hub as these ports are weaker. or a different USB port if on a laptop. You should get new hardware found, be sure to Trust the Device.