Leon, as far as getting repaired, you would probably find out it is cheaper to get a brand new unit eg Dell, HP, Lenovo etc with all you want and a good warranty for what it would cost to do the technician, rebuild route. Generally techs charge quite a bit. If it were me, I reckon that would be the way to go at least you would have a warranty if anything did go wrong. I have a mate who is a tech and he builds all my computers with full warranty and he does not overcharge, maybe because he is a mate! He generally says that a complete renewal is the way to go and not to fart around with old bits and pieces. You don't have to go to rogues like Hardly Normal either, there are some good online places eg Shopping Express, Mwave just to name two. This mob (
https://www.megabuy.com.au/)have both new and 2nd hand computers, not dealt with them, but looking at their site it looks to have a pretty good range of computers, both pre-owned and new.
Anyway, it definitely warrants some thinking about to save your sanity.
