Hi aitch2. Economically you would probably be better advised to buy a new base unit, but I must admit that I haven't bout a computer since mine was new in 1995. Since then I have upgraded so many parts so many times that there is nothing of the original remaining. In the process of multiple upgrades I have learned an enormous amount about computers to such an extent that to family and friends I'm considered to be an "expert". If you fancy a challenge go for an upgrade, but if you want an easy solution with a warranty, then buy a new computer or base unit.