why is my usb device not recognized
USB devices are Plug and Play devices, so there is little that you can do to control or configure them. Windows usually detects devices when they're plugged in and, if necessary, installs drivers. If your USB does not work after you plug it in, its probably because of one of the following causes:
Windows cant find a driver for the USB device. When hardware attached to a computer doesn't work properly, it's often because of a driver problem. When you plug in a USB device, Windows automatically identifies the device and searches for a driver. In most cases, Windows already has the necessary driver installed or can automatically download it from Windows Update. If Windows installs a device driver automatically, you'll see a notification indicating the device is ready to use. If Windows can't find the driver you need, it will prompt you to insert the disc containing the driver that came with your device. Occasionally you might have a USB device that did not come with a disc containing a driver and for which Windows cannot find a driver. In this case, you can look for a driver on the device manufacturer's website. You can often download drivers from the support section of such sites. If you are unable to find a driver there, try contacting the manufacturer. If you are unsure of how to contact the manufacturer, go to the webpage for a list of contact information for most hardware vendors. Windows doesn't recognize the USB device. Before Windows can find and install a driver for your USB device, it must be able to correctly identify the device. Occasionally you might have a USB device that Windows doesn't recognize and that did not come with a disc containing a driver. In this case, you can look for a driver on the device manufacturer's website. You can often download drivers from the support section of such sites. If you are unable to find a driver there, try contacting the manufacturer. If you are unsure of how to contact the manufacturer, go to the webpage for a list of contact information for most hardware vendors. After you find a driver for a device that Windows cannot identify, you will have to install the driver manually. For information about manually installing a driver, see. There's a problem with the device. If you have another computer that is working correctly, plug the device into that computer to see if you encounter the same issue.
If you have the same problem, there might be a problem with the device. If you believe your device is faulty, contact the manufacturer. You can also check the status of your device in Windows. If you suspect that a driver you received from the manufacturer is faulty, contact the manufacturer. The driver for the device is faulty. Occasionally a manufacturer might release a faulty driver for one of its devices. If you have a device that is not working properly, it can be difficult to tell whether the problem is with the device itself or the driver for the device. If a device works fine but then fails after you update its driver, the problem is with the new driver. Roll back to the previously installed driver. For instructions, see. If you are installing a device for the first time, you cant roll back its driver, because there is no previously installed driver. But you can try to determine if the driver is faulty. If you suspect that a driver you received from the manufacturer is faulty, contact the manufacturer. The USB port is defective. If you connect a USB device to a defective port, the device will not work. Try plugging the device into a different port. If all USB ports are in use, unplug one of the other devices, and plug the problematic device into that port. If the device is plugged into a secondary USB hub instead of directly into a USB port on your computer, unplug the device from the hub, and then plug the device directly into a port on your computer. The device isn't getting enough power. USB hubs do not always supply enough power for some devices. The device you are trying to use might require all the available power or bandwidth that your computer can provide. If the device is plugged into a USB hub and not directly into a USB port on your computer, connect the device directly into a USB port on your computer. You can also leave the device plugged into the USB hub, and unplug other devices in the hub to see if your device works. If this solves the problem, you might want to obtain a USB hub with its own power supply so that you have adequate power for all devices plugged into that hub. Microsoft has extended the $75 off sale of the Microsoft Band 2 from May 21st to July 29th.
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