Just charged the battery and fired up my new x67c. For some reason it wont shut off. It is off when i connect the battery,but as soon as i turn it on it wont power down. Ive googled and searched every place i can think of and still no help. Everthing else seems to work on the unit. I can add a toggle switch but would rather be able to shut it off on the machine. Any help is appreciated.