Mike's PC Service can take care of your computer either by upgrades, fixing it or assist you in selecting the right new computer based on your needs.
If your computer is three to four years old, that's a better time to start looking at an upgrade, since you can get one to three more years of time by fixing it or upgrading it. At that age, you can probably get away with a repair that costs 50 percent of a new machine. If the price adds up to more than that, you should think about buying a new computer.
Of course some computer owners simply like their computer and want to hang onto it as long as they can. This is a personal choice of course. For many businesses most replace their computers every 5 years. Or rotate new computers to their users and utilize older computers as back ups or use them at work stations.