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I will never take a repair job from a customer whose computer is completely outdated that it makes absolutely no financial sense to clean it instead of getting a new computer. I'll usually help them find one that meets their needs and then I'll work out a deal on getting their stuff transferred over and software reinstalled/updated..etc...you buy a new laptop...its been on the shelf for 6 months and is already outdated.
imo, the biggest design flaw of most laptops is placing the heatsink/fan under the board with no screw plate access to it. There are a few Dells that have this feature and it is a joy because it takes about 5 minutes to replace thermal grease on them.
Dried out grease and a dust/hair mat between the fan and the sink is one of the major reasons for overheating and low performance on laptops....this is because people will not take the time once a month to blow it out from the outside ports....once a horizontal mat lays down with a few hairs....its over...
Most laptops the GPu & CPU are on the same piece of copper so then the overheating leads all your grease to dry out....if its really bad then you have the solder on the chips burning all flux out of them drying them out and you have an issue with the chips seperating from the board......there was a whole slew of nvidia chipests with bad placements on the board a few years back on HP dv series models that forced a recall on them.
So take me advice, find a laptop that has an access port in the back to the sink and that is a laptop that should last you a very long time and be hella easy to maintain.
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