SOLVED Win 7 "Sees" Win 8 Phone on USB Port but Subsequently Ignores It

[pmillen]

When I plugged in my Win 8 phone into my Win 7 laptop USB port the laptop used to open a dialog box offering action choices. Now it just (1) sounds the two tones and (2) lists a Windows phone in the Open Devices and Printers icon. Windows Explorer won't display it.

It performs normally on my other two Win 7 computers and my Win 8 Surface Pro2 so it's obviously a setting on my most frequently used laptop.

Any suggestions for resetting to the original default?

 

[TrainableMan]

Run diskmgmt.msc and see if you can assign it a drive letter.

 

[pmillen]

Thanks for the reply. Before trying your suggestion I uninstalled it (most people say "removed") and plugged the phone back into a USB port. A new driver was installedand it now shows uo in Windows Explorer. I don't know if a dialog box opens. I don't particularly care 'cause I just want to move files to and from the phone.