Does your computer’s USB stops working? If you are experiencing problems with your USB devices, there are a couple of things you can do to try and resolve them. Most new computer components, such as printers, keyboards and mice, scanners and digital cameras all interface with your computer via USB. USB is a technology that allows devices to be hot-swapped, which means you can generally disconnect it without having to power down the computer. Occasionally, however, you might experience problems with USB devices not being recognized or shutting down unexpectedly.
USB Devices Not Recognized
If you are trying to plug a device in but it is not showing up, make sure the device is plugged in and powered on (if necessary). If you have multiple USB ports on the computer and other devices are working, try the problem device in a known working port. If it works in the other port, you may have a bad USB hub. You can try uninstalling the hub in the Device Manager and then rebooting the machine. Windows will find it again and install the necessary software drivers. This will often fix the problem.
USB Stops Working
If you successfully connect a device via USB, but the USB stops working after a while, you will need to edit the power management for that particular hub. Right-click My Computer, select Properties, then Hardware and then Device Manager.
Scroll down to your USB root hubs at the bottom.
Right-click each and select Properties, then Power Management. Uncheck “Allow the computer to turn off device to save power.”
USB Stops Working Conclusion
If a USB stops working problem persists, you can try purchasing USB cards that plug into the computer’s PCI port. Its always possible the USB controller on the motherboard has failed and a new might correct the problem. Tip: If you are purchasing a new USB card, consider getting one that has a Firewire port, as well, to increase your computer’s capabilities.