I bought my HP Pavillion dm1 because I am a writer and I wanted a large keyboard on a relatively small device. The dm1 served my purpose well until, one day, it simply shut down and refused to ever work again. From a brief internet search I believe the problem is a power issue, possibly the internal power jack connection. From the number of owner queries to HP about this, it is clear they are aware of it. It is also clear they can't be bothered to do anything about it, or respond to the queries. I lost hundreds of pages of a manuscript. I'm sure others have lost valuable work also. There is no point in testing the processor, the graphics card, the display, etc, etc, It DOESN'T WORK! There will be no more HP purchases for me, of any description. I shall be spreading the following all over the social media - Do Not Buy HP.