Here is a detailed step-by-step guide to help you troubleshoot and solve issues with a dysfunctional USB port on your computer. Let’s break it down into a more concise guide:

1) Check the Basics:

• Ensure that the USB device you are connecting is functional. Try using a different USB device to see if the problem persists.
• Verify that the USB cable is not damaged. Use a different cable if necessary.
• Try connecting the USB device to a different USB port on your computer.

2) Restart Your Computer:

• Sometimes, a simple restart can resolve USB-related issues. Restart your computer and check if the USB port is now functioning.

3) Update USB Drivers:

• Outdated or corrupted USB drivers can cause connectivity issues.
• Open the “Device Manager” on your computer, locate the “Universal Serial Bus controllers” section, and right-click on each USB controller. Choose “Update driver” and follow the on-screen instructions.

4) Check for System Updates:

• Ensure that your operating system is up to date.
• On Windows, go to “Settings” > “Update & Security” > “Windows Update.” On macOS, go to “Apple Menu” > “System Preferences” > “Software Update.”

5) Disable USB Selective Suspend:

• On Windows, USB Selective Suspend can sometimes cause connectivity issues. Disable it by going to “Power Options” > “Change plan settings” > “Change advanced power settings” > “USB settings” > “USB selective suspend setting.”

6) Check Power Management Settings:

• In the “Device Manager,” right-click on each USB root hub, select “Properties,” go to the “Power Management” tab, and uncheck the option that allows the computer to turn off the device to save power.

7) Inspect USB Port for Physical Damage:

• Visually inspect the USB port for any physical damage, bent pins, or foreign objects that may be causing a connection issue.

8) Reset USB Hub:

• If you are using a USB hub, unplug it, wait for a few seconds, and then plug it back in. Sometimes, resetting the hub can resolve connectivity problems.

9) Run Hardware Troubleshooter:

• On Windows, use the built-in hardware troubleshooter. Go to “Settings” > “Update & Security” > “Troubleshoot” > “Additional troubleshooters” > “Hardware and Devices.”

10) Check for Conflicting Software:

• Some third-party software may interfere with USB functionality. Temporarily disable antivirus, firewall, or third-party USB management software and check if the issue persists.

11) Reinstall USB Controllers:

• In the “Device Manager,” right-click on each USB controller under “Universal Serial Bus controllers” and choose “Uninstall.” Afterward, restart your computer, and the drivers will be automatically reinstalled.

12) Perform System Restore:

• If the USB port issue started after a recent change, use the System Restore feature on Windows to revert your system to a point before the problem occurred.

13) Check BIOS/UEFI Settings:

• Access your computer’s BIOS/UEFI settings during the boot process and check if USB ports are enabled. Consult your computer or motherboard manual for instructions.

14) Update BIOS/UEFI:

• If there’s an available update for your motherboard’s BIOS/UEFI, consider updating it. Follow the manufacturer’s instructions carefully.

15) Consider Professional Help:

• If none of the above steps resolve the issue, there might be a hardware problem. In such cases, seeking assistance from a professional technician may be necessary.

By following these steps, you can systematically identify and resolve issues with dysfunctional USB ports on your computer. If you encounter difficulties at any point or the problem persists, consider seeking help from technical support or a professional technician.