The main three troubleshooting guide are below:
Analyzing A Bad Power Supply
A power supply will tend to flop before anything else, also can fail without warning, and they take the maximum abuse. A power flow or brown out follows when they are the front line. The good news is, they are really easy to change should you find this is the problem. The worse part is, they can incompletely flop. This means you might be receiving power to the motherboard, other components and fans, but you do not have the exact voltages to start the motherboard. The cable plugs and power supply are situated near the back in the case into the PC.
Analyzing A Bad Computer CaseThe case is the next easiest troubleshooting things. When a dead PC will both generally be a bad motherboard and power supply. A case has unimportant smarts, but it does have wires important for a motherboard power button that can be bad, and some level has advanced I/O panels that can be a flop.
Analyzing A Bad MotherboardMotherboard is the durable device to identify and replace. A bad motherboard changing is a long process. If the motherboard is confirmed to be corrupt, then removed from the case and replaced. Unluckily, there’s a lot of junk plugged into the motherboard, such as the RAM, Video Cards, CPU, PCI cards, CD / DVD drives, power supply, hard drives, and fans. There are also complicated connections that must be completed to reset switches and the case’s power.
Then take a decision what is problematic device, replace or repair the device.