If it is the first time for you to install Android USB driver on Windows 7, you are required to connect your Android-powered device to your computer’ USB port.
Thus you can’t transfer data between mobile phone and computer, or share important files with others.
When you install a hardware or plug in a new device Windows 7 / Vista automatically selects the best driver.
I am positive that, under Computer Management, I am choosing the Android device under Other devices, which another question I have is that two "Android" drivers are showing up, but I figured this was due to me owning a previous phone with Android.
Follow the steps by Neeraj, just replacing the first one by the drivers in point is to make sure you change the usb connection to use PTP and try to install the driver from the Nexus 5 under other devices. Another related issue: Every time you connect a device through USB 3.0, Windows 7 automatically installs its own drivers that can't be updated.
I am attempting to install the Android USB Driver in my computer running on Windows 7.
Luckily, you can easily install the phone USB drivers on your Windows computer (no matter whether you use 64-bit or 32-bit Windows 10, Windows 8.1, Windows 8, Windows 7, Windows XP, or Windows Vista). Installing mobile phone USB driver is just a piece of cake.
All you need to do is just to download the exactly compatible and also the latest drivers for your phones.