Hey andrew, here's what I do with mine. I hate computers with a vengeance but I have to use them everyday. They haven't been kind to me ever from home PCs to online servers. Anything you can think of that would go wrong with a PC I've experienced.
First thing is air flow. Just open the boxes once a month do a quick dusting and vacuuming. PCs & UPSs. Takes 10min and saves you a lot of troubles. Keep them off the floor too. Less dust and better cooling.
Image, image, image. If you haven't done so get a program such as acronis, separate HDs. Image your system every couple of weeks and shelve the drives.
Works for me.
