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please do the following steps,1) Remove your reader from the charger if connected.2) Press and hold the power button to the right and hold it there for 30 seconds.If you only hold the Power button to the right for only 5 to 10 seconds you'll just turn the unit OFF. So,you have to hold the power button to the right for at least 30 seconds.It will reboot and it will work again.If that does not work then follow these steps below.1.Locate a small pin hole at the back or bottom of the reader.2.Unfold a paperclip and insert it into the hole.3.Press gently until you feel a click.4. the reader will reset. it will work.Hope it helps.PLEASE LEAVE A POSITIVE RATING.Regards.It would be kind enough to give a positive rating to my answer, but if you are going to click either "Poor service" or "Bad service", please stop and click on the REPLY or CONTINUE CONVERSATION button so that i will be happy to assist you with your problem.