Troubleshooting

Troubleshooting is largely a matter of eliminating parts or programs that are working until you find the part that causes the problem. Consider this scenario, you pressed your PC's power button this morning only to find that it didn't start. The PC worked just fine last night, and you haven't recently performed any maintenance on the system's interior. If you start by making sure your PC truly isn't powered on, you'll save yourself several troubleshooting steps.

Check the monitor's light, is the monitor on? If not, you'll want to check its power cords. Once the monitor is on, take a second look at your PC. Do any lights appear when you try to power on the system? If you see lights, or if you can see or hear running fans at the back of the computer, the system doesn't have a power problem. Instead, the PC may be having trouble sending an image to your monitor, which could indicate a problem with your motherboard, video card, or memory. If the PC doesn't power on at all, check the power cord and the surge protector. Many surge protectors have switches that let you kill power to any of the devices that plug into them. Next, check the wall outlet by plugging a different device into the socket your PC's power cord occupied. If you're certain that power is flowing to the PC, you've ruled out the most basic problems and can focus on more advanced troubleshooting tips.