One thing to keep in mind is that replacing certain laptop components...especially MoBo's...can be very pricey. Depending on the age of the unit and how you use it, it may be only a matter of a relatively small amount of money to get a new one. I had to tell a Client yesterday that I *could* repair his daughter's system, but when all was said and done, it would end up costing him about $280 for a system that's realistically only worth about $125-$175, and that if they sold the one she had and added it to the money saved from not repairing it, he was about $75 shy of a brand new basic system, which was what she had to begin with.