I bought this via Ebay. Owner will replace becuase I have power problems. Does not power on when battery is in bay. Thought regular plug would work, but it keeps shutting off every 1-15 minutes - no rhyme or reason to shut-off time. Can anyone advise before I send back?

 

 Also, laptop mouse drags to far right all the time. I tried plugging in a manual mouse, but it did same.

 

Thanks!