Having problems with your USB connections?
This can be a tricky problem to troubleshoot because of the fact that each USB device requires different hardware settings, which can conflict with other USB devices. Since multiple USB devices share a single path into your computer, it can be confusing (and time consuming) trying to isolate the problem.You might be dealing with driver issues on a single USB device, compatibility issues between the devices plugged into the same USB slot on your computer, or even a problem with your USB cord or slot in your computer.
Before you start troubleshooting a USB problem, double-check the fundamentals: Does your USB cable have a good connection? Confirm that any USB hubs are properly connected and plugged in to powered electrical outlets. Many failures can be traced to unplugged equipment or devices that are plugged into outlets that are not receiving power.
To isolate the problem, have a simple USB device that works properly on another computer, such as a USB mouse. You can test this device on the computer experientcing the problems to verify that the USB port, not a faulty device or cord, is causing the problem. Here are some other common issues with USB connections and how to fix them...
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