I purchased this Dell Latitude d520 in September of 2012, It came with an adapter that did not work, which Blair Tech. replaced, then this month Feb. 2013 the computer stopped working, no lights come on or anything. I called Blair Tech. and they said it was not covered under warranty and was most likely the mother board. In December of 2012, Blair Tech. changed their warranty to a 1 year warranty but would not cover my problem. I was going to purchase a second laptop, but will not do so now.