how often should you replace a laptop computer
5 Answer s. It really depends on how much you spent when you originally bought it. In theory the more you spend up front, the longer between upgrades. And when it comes to PCs, you can usually upgrade parts rather then replacing the entire machine, but that isnât so easy with a laptop. Four years seems like a decent average, but depending on what you will be doing with the computer it could be useful to you for many more years then that without replacement. battlemarz (776) âGreat Answerâ (0) Flag asâ¦ Â¶. It all depends on what you do, how often you do it. You can make a computer last for up to 10+ years if you treat it correctly. For someone like myself, 4 years is to long. In the past 4 years i have rebuilt my PC probably 3 or 4 times.