PCs still require maintenance, as much as we wish they were magic boxes that did all the work for us. Unfortunately, many people make mistakes when it comes to maintaining their PC. These mistakes could result in hardware damage, security breaches, data loss, and general system instability. We generally cover lists of things you should do, but knowing what not to do can be even more important. Here we cover some of the most common mistakes so you can avoid them and keep your PC running like new.