When this happens, it means that more than one device is trying to use the same I/O port. Open the device manager and see if there are any yellow exclamation points ...
Toshiba U840W-X0310 Satellite U840W-X0310( Intel Core i5 /6GB/500 GB /Integrated Intel HD Graphics 4000/ Windows 7 ) ₹ 53,799 ...
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