USB Port Not Working
Answer a couple of questions and get the exact fix.
What exactly is wrong with your USB port?
Why does this happen?
A USB port that stopped working is usually a driver, a power-management setting, or a physically faulty port. The fixer below walks through the order that recovers most ports.
Common causes
- A stuck USB controller driver.
- Power management sleeping the port.
- A physically damaged port.
- A device that needs more power than the port provides.
Symptoms
- Nothing happens when you plug a device in.
- Device Manager shows a yellow warning.
- Devices work then stop randomly.
- Only one specific port fails.
Frequently asked questions
Why did my USB port stop working?
Usually a driver glitch or power-management setting. Restart the computer first — it resets the USB controllers — then update the chipset driver.
How do I fix a USB port that isn't working?
Try another port and device, check Device Manager for errors, uninstall and rescan the USB controller, and use a powered hub for power-hungry devices.