Didn't know a motherboard or the power supply port could go bad after only 1 year and 37 days!! OOPS, I'm bad I didn't buy their 2 year extended warrenty for another 3 figures is price. I'm SOL, never will by Microsoft laptops ever again. Not worth the money, my hp laptop may be slower now but still works fine, and that was with windows 7 installed. So that tells you how old it is!!!! STILL WORKING!!!!!