Has anyone else found a solution to this problem: in my less than  4 month old 600m laptop, I found the ac adaptor no longer worked (green light off).  Searching online to see if others had a similar problem, I found that plenty of others had AC adaptor problems.  One suggestion was to look at the bottom sticker on the laptop for the adaptor and  system amperage requirements.  Lo and behold, the sticker on my laptop states for use with 19.5V 4.62A input and the adaptor sent with the system is a 19.5V 3.62A output---mismatched. Incidentally, I am told by engineers that 4.62 equates to 90 watts of power contrasted with the output of 3.34 which equates to 65 watts . There may be some 600m’s that work on 65 watts of power but not mine.  I have spoken with several at Dell and they seeninly refuse to address the issue.  It appears that the documentation the Dell Tech Support People have is wrong.  I spoke with one person who I was told was a supervisor and was told that even if Dell shipped the wrong part, if I hadn't notified them within 21 days they would do nothing! Is this true?  I was also told by "supervisor" that the only adaptor available was the one I received; I have two Dell part numbers (which I gave him) with a 4.62 output – P/N 7W104 and P/N 9T215.  I want the correct adaptor for my system.  How do I acomplish this? Thank you.