It sounds like you may have accidentally used the wrong charger for your device, which is causing it to behave abnormally. The WD charger model 800065 is intended for use with specific Western Digital devices and using a different charger may cause damage or affect the performance of the device. I suggest you to check the manual of your device, it should have the specifications of the charger that is compatible with it. Also, you should contact the manufacturer of your device for further assistance.