CPUs get power from two places-- From the motherboard through the tiny pins on the bottom of the CPU (Which in turn gets power from the 20 / 24 pin connector that connects tot he power supply) and from a 4 / 8 (Only on the newest boards) - pin connector that directly feeds the CPU a very steady supply of power. Both come from your actual Power Supply.
Neither, The CPU is the Central Processing Unit, it only processes information and bits of data the computer sends thru it. The motherboard supplies power to the case fan AND the CPU fan, which is supplied power from the PSU (power supply unit)
Yes, almost every PSU has enough power to supply a P4 CPU. It depends on the total load, not only on the CPU.
Many/most motherboards have a separate power connector for the CPU. Check your motherboard's installation instructions to locate the CPU power connector. Then connect the matching power supply cable to the CPU power connector on the motherboard.
I know it as a P4 power connector. it works for many CPU's.
the monitor works and the video card and the power supply but i don't know if its the CPU chip or the motherboard how can i tell whats wrong
No
A power supply that transforms AC to DC is used to provide the proper voltage to a CPU.
cpu memory hard disk power supply
The mother board, power supply, and chassis
The hardware unit that contains the CPU, the RAM, a hard disk, and a power supply is called the "motherboard."
Yes, if your fan stops working because your power supply went bad, the CPU could overheat very easily and shut down or even crash resulting in loss of data.