Feel free to use this PC building guide as a reference for any questions you have regarding how PC hardware is put together, or questions about specific components.Īlso, we recommend reading ahead to find the situation that most closely matches your own. Throughout the diagnostic process, we will be talking in detail about various PC hardware. If your PC is turning on but nothing is displayed on your screen, or if you are stuck in the BIOS settings and unable to access your operating system, you can check out this troubleshooting guide on 'Why Can't I Boot into Windows?' For the sake of clarity, we’re assuming that either your system isn't reacting at all when the power button on your case is pressed, or that it’s turning on for a second or so then shutting down again. “My PC won’t turn on” can mean quite a few different things.

Whether you’re building a PC that has never successfully turned on, or are trying to fix a new issue for one that was previously operating correctly, these diagnostic solutions should be equally helpful.

Instead, we’re covering steps you can take to identify the problem and fix it. Modern PCs are complex machines, so it might not be immediately obvious where the problem originates.īecause of the variety of possible hardware configurations, it isn't possible to diagnose every possible issue. When your PC won’t turn on, it can be hard to know where to start fixing it.

Keyboard lights up when computer is off