My last two laptops – really good brands, high end – have both failed for the same reason my son’s just failed. The little connector piece in the back where the power cord plus in gets loose from the inside connection to the motherboard. Once the motherboard loses connection, the laptop is basically toast. You cannot reconnect the motherboard and you can’t solder it back together. This is obviously a design flaw inherent to may different types and brands of laptops.
If someone wants to start up a class action suit against the laptop manufacturers for this defect, I’m on board. I’m about sick of spending about $3,000 every year on a new laptop because one little connector piece breaks. Just once I would like to feel that my investment in a laptop will last for 3 years. Mine haven’t even reached one third of their tax depreciation value before they have to be thrown out.