why is my android not getting connected to pc via usb ?

[AC Question]

I have a moto e 1st gen android phone and it used to get connected to my pc every time btw i hv win 7 32 bit but now nothing happens on connecting
There is no notification on phone but it still keeps charging and also there is no prompt on pc also there is nothing in the device manager
I tried different usb cables i got my usb point change on the phone i manually installed the drivers nothing wrks