how to increase it:pc uptime refers to how long your computer or laptop has been functioning without a major crash. The longer your computer runs, the more likely it is to encounter issues. And while most people will never experience a hardware failure, they may face a number of software issues that can cause downtime. You should check your system regularly to make sure everything is working properly. If something isn't working, you can either take your system offline or try to resolve the problem yourself. There are a number of reasons why your computer might stop working, and you can try troubleshooting these problems yourself. However, it's often best to take your system offline to get it fixed.