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Troubleshooting the CPU
One of the most critical components on your PC is the CPU or central processing unit. It can fail because it was poorly made, overworked, or strained from overheating or improper use. Overclocking, or a method of pushing PC performance past its standard speed, can reduce a CPU's life span as well. So can electrical problems that send surges into your PC, affecting the motherboard and possible also the CPU.