The driver is loaded based on a compatible ID match similar to other USB device class drivers included in Windows. If you want to load Usbser.sys automatically, set the class code to 02 and subclass code to 02 in the Device Descriptor. For more information, see USB communications device class. Step 1 — Download and extract the Android USB Driver to your PC. Step 2 — Click Start (Windows) - Control Panel- Device Manager (Select Device Manager). Step 3 — On the Device Manager window find and click on computer name to select Add legacy hardware.

Last updated on February 4th, 2017

Several times I have faced problems with USB devices in all Windows versions. For instance a USB device (e.g. printer, scanner or webcam) is not functioning or a USB storage device (e.g. USB flash disk) is not detected at all. USB devices issues can occur for different reasons.

For example, when you eject a USB storage device without using the “Safely Remove hardware” option or after a program or Windows Update or after a virus attack. If you face problems with USB devices, then you can use this troubleshooting guide to resolve your USB problems.

USB Errors – Symptoms that can fixed using this guide:
– USB Device not recognized
– USB Printer not recognized or not printing
– USB Storage device cannot be recognized or ejected through “Safely Remove” option.
– USB device driver not successfully installed or Windows cannot install USB device error.
– Unrecognized USB device in Device Manager (error code 43)

How to Troubleshoot & Solve USB device recognition issues.

Before continuing to apply the solutions given below perform these steps:

1. Completely Shutdown your computer and remove the power cable. (Also remove the battery if you own a laptop). Leave it unplugged for about 5-10 minutes and then re-plug the power cord (and the battery). Turn On your computer and check if your USB devices are working.

2. If you own a laptop:

Turn off your laptop.
Unplug the AC power adapter and the battery.
Leave your computer without power for about 15 minutes.
Reinsert the battery
Turn on your laptop.
Plug one by one all USB devices.
Check if the USB not recognized problem is solved and the USB devices are working.
Plug the AC power adapter.

3. Change the USB cable that connects your computer with the USB device.

4. Download Hirens BootCd and boot your computer in MiniXP environment. Plug a USB flash stick on an empty port. Open Windows Explorer and check if you can access USB stick's contents. (Instructions on how to download and start your computer from HirensCD MiniXP can be found at the steps 1,2 & 3 on this tutorial). If you cannot access USB stick's contents, then probably your motherboard's USB ports are damaged.

5. Scan your computer for malware by using the instructions in this guide: Quick Malware Scan and Removal Guide.

Solution 6: Completely Remove and Re-Install all Universal Serial Bus Controllers & USB Devices

Solution 1: Solve USB problems with Microsoft USB Fix It utility.

1. First download the Microsoft Fix It utility to your computer.*

* Notes:
– Windows 8 & 8.1 users must download the Windows 8 USB Hotfix.
– Windows 7 USB Fix it Utility can work also for Windows Vista & Windows XP.
– Windows Vista users can try also the USB Devices Fix It utility for Windows Vista.
– Windows XP users can also try the USB Fix it for Windows XP.

Windows 8, 8.1, Server 2012: USB Hotfix (https://support.microsoft.com/kb/2830154).
Windows 7, Vista & XP:USB Fix It utility (https://support.microsoft.com/mats/windows_usb_diagnostics).
Windows Vista (alternative): USB Devices Fix It for Windows Vista (http://windows.microsoft.com/en-us/windows-vista/tips-for-solving-problems-with-usb-devices)
Windows XP (alternative): USB Fix It for Windows XP (https://support.microsoft.com/kb/817900)

2. RunMicrosoft Fix It tool and press “Accept”.

3. Select “Detect problems and apply the fixes for me (Recommended)” option.

4. Let the troubleshooter to fix USB problems and press “Next”.

If your problem is fixed, close the troubleshooter and check your USB devices functionality.

Solution 2: Diagnose & Solve USB problems with Windows Troubleshooter

1. Open “Troubleshooting” from Control Panel. To do that:

Press “Windows” + “R” keys to load the Run dialog box.
Type “control panel” and press Enter.

2. Change the “View By” option to “Small icons” and click “Troubleshooting”.

3. Under “Hardware and Sound” section, click “Configure a device”.

4. When Hardware and Devices troubleshooter appears on your screen, press “Next”.

5. When troubleshooter diagnose is completed, apply all fixes prompted and then check USB functionality.

Solution 3: Change USB Suspend settings.

1. Open Power Options from Control Panel. To do that:

Press “Windows” + “R” keys to load the Run dialog box.
Type “control panel” and press Enter.

2.Double-click to open “Power Options”.*

* Notice: If you don’t see “Power Options” change the “View By”: “Small Icons”.

3. Click “Change plan settings”.

4. Click “Change advanced power settings”.

5. At Advanced power settings, expand “USB Settings” and set “USB selective suspend setting” to “Disabled”.*

* Notice: For laptop computers you have to change this setting in both fields there: On Battery & Plugged in.

6. Press “OK” and restart your computer.

Solution 4: Change USB Power Management Settings.

1.Unplug all USB devices and open Device Manager. To do that:

Press “Windows” + “R” keys to load the Run dialog box.
Type “devmgmt.msc” and press Enter.

2. In device manager, double-click to expand “Universal Serial Bus controllers”.

3. Double-click to “USB Root Hub” to open its properties.

4. Click “Power Management”.

5.Uncheck (Deselect) the “Allow the computer to turn off this device to save power” option and press “OK”.

6. You must perform the same operation (steps 3, 4 & 5) for all “USB Root Hub” devices.

7. Close “Device Manager” and plug all your USB Devices again.

Solution 5: Install the latest Intel Drivers by using the Intel® Driver Update Utility.

1. Download the install the Intel® Driver Update Utility.

2. When the installation is completed, press the Start Scan button and let the program to detect and find the latest drivers for your Intel devices.

Usbest USB Devices Driver