If so, this problem may be an USB port or power supply related issue. Also please try to connect this keyboard to another machine and check whether Repeat the step 5 and uninstall all items under 'Universal Serial Bus Controllers'.Īlso I suggest that you may try to install the driver manually. Press 'Down' to move to the first item and press 'Delete' to remove it.Ħ. In Device Manger, press Tab and use 'Up' and 'Down' to move the highlight to 'Universal Serial Bus Controllers'.ĥ. Type “devmgmt.msc” in the Search bar and press 'Enter'. Press 'Ctrl + Esc' to open the “Start” menu.Ģ. Then, restart your computer and Windows 7 will reinstall all USB controllers automatically.įirst, please disconnect all USB devices. Repeat the step 2 to uninstall all items under 'Universal Serial Bus controllers'. In Device Manager, double click to expand 'Universal Serial Bus controllers', right click on the Host Controller, click 'Uninstall' and click 'OK'.ģ. Click 'Start' button, type “devmgmt.msc” (without quotation marks) in the “Search” bar and press 'Enter'. At the beginning of troubleshooting, I suggest that you may upgrade your USB controllers driver first.įirst, please disconnect all USB devices and then perform the following steps:ġ.
