After turning on my Inspiron 6000 recently, a black screen appeared with the following message at the top "****MANUFACTURING MODE: LEVEL **** Press Fn-X to return the system to normal running mode. I have tried hitting the "Fn" key, "-" key and letter"x" key simultaneously and separately and in the above sequence with no results also tried just the "Fn" and "x" key excluding the "-". Although I had no results with the above procedures, a few minutes after turning on the computer a "Warning! Battery is critically low." message appears. My battery hasn't been able to hold much of a charge for a year, but as long as I have it plugged in it has worked normally. I was able to get the computer running once by removing the battery and plugging in, but now that doesn't work. I purchased a new battery, but have had the sqame results as above. Can anyone help me. Thank you.