How long can this computer last?

It's getting pretty tricky. A pop-up comes up every minute it seems to tell me something is disasterously wrong with my computer and I should attend to it immediately. It has limited my computer time which is okay cause I've plenty of things left undone around my house. Which for some reason STILL aren't getting done. Yesterday one of the dancers on my dance card came over and defragmented my computer. Today I've not experienced any pop ups and it is a delightful change. However, I still need to figure out why the floors remain unswept.