Power supplies are essential hardware components that draw energy from an electrical outlet and convert it into electricity at the proper voltages to power a computer's motherboard and other devices. Power supplies can become overstressed if the computer demands more power than the supply is able to put out, which can result in power supply failure. A failing power supply should be replaced immediately to prevent system damage. Fortunately, there are a number of telltale signs that can help identify power supply failure.
