Why my laptop (toshiba windows 8.1) dosen't recognize (connect) any cell phone (android)?

[WPCentral Question]

On the cell phones I closed and opened usb connection mode in mass storage or the phone himself but no result. I have an LG optimus and an LG g2. No one work with the laptop but was working few weeks ago. I think something was change in the my laptop configuration. Thank you

 

[several potatos]

Oh lord, the LG phones (though in and of themselves excellent) have a tough time connecting to PC. Go to settings. Find about phone. Go to software info. Keep poking Build Number until a box says you're a developer. Go back and now there should be a settings box for developer options. Choose ON, and turn on usb debugging and always screen on. Go to the homescreen and then see if it is recognized.