I have done component replacement / computer building years ago but I'm a bit out of date. Would be comfortable doing the work if I was just sure what was needed, and I have the screwdriver sets etc.
Have got 2 laptops (3 and 4 years old) I'd be completely happy with hardware-wise if only they didn't overheat. No need for bigger HDs/more RAM/graphics power etc. Not a gamer now. The keyboards I personally find most RSI friendly are on an expensive brand, so I would much rather keep the cases/screens and just replace internals where needed. One of them also has a bigger screen than I could justify budget-wise these days and it would be great to be able to keep it usable for a lot longer. There are times one or other of them will be on for 15+ hours a day so they do get heavy use, albeit only for the likes of office software, browsing, TV and music, and it seems there is only so much cooling stands and the odd clean can do when a heavily used machine is a few years old.
One - the one I use most at the moment - occasionally has thermal shutdowns, and the other is very noisy and does get very hot, though I can't remember if it actually has ever shut down.
Any advice on how to keep these beasts going for longer?