Last updated on February 4th, 2017

Jan 24, 2019 - Cypress's family of USB 2.0 USB-Serial Bridge Controllers. USB-Serial Windows Driver Installer – This file will install the Windows host. A yellow exclamation mark next to Universal Serial Bus (USB) Controller means the device driver is not installed correctly. In that case, your USB devices cannot be recognized by PC. After upgrading the system to Windows 10, you find that your USB device cannot connect to your PC. Solutions below may help you fix the USB port issue. Expand the Universal Serial Bus controllers branch. Download and install Driver Easy. 2) Run Driver Easy and click Scan Now button. Driver Easy will then scan your computer and detect.

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:

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• 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:

1. Press “Windows” + “R” keys to load the Run dialog box.
2. 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:

1. Press “Windows” + “R” keys to load the Run dialog box.
2. 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:

1. Press “Windows” + “R” keys to load the Run dialog box.
2. 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.

3. After scan, Download the drivers found.

4. Finally press Install and follow all the prompts, to install the latest Intel drivers found and restart your computer.

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

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

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

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

3.Right-click on every USB device found there and select “Uninstall”.

* Note: If you lose the connectivity with your USB Keyboard or the USB Mouse, during uninstall, then unplug & plug them again on the computer.

4.Restart your computer.

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5. After restart wait until Windows automatically install all USB Serial Bus controllers again.

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6. Now plug your USB devices (one by one) and see if your computer can recognize them properly and without errors.

Attention: At this point, if a USB device is still not recognized by Windows, then you must uninstall the specific USB device using Device Manager and install it again.

7. Uninstall USB unrecognized devices.

Example 1: If you plug your USB flash disk (USB Storage device) and it doesn't appear on Windows Explorer, then find this storage device in Device Manager and uninstall it. After uninstalling, unplug the storage device from your computer and plug it again.

Example 2: If you plug your mobile phone (by using a USB cable) and it is not recognized by Windows, then find your mobile phone in Device Manager (usually it is under “Portable Devices) and uninstall it. After uninstalling, unplug the Mobile’s USB cable from your computer and plug it again.

Good Luck!