1. Chapter 1 Replacing Power Supplies Prepared by: Khurram N. Shamsi

2. Power Supply A power supply is the component that supplies power to the other components in a computer. It converts the alternating current (AC) line from your home to the direct current (DC) needed by the personal computer.

3. Potential Power Problems associated with PCs The computer freezes intermittently. There are random memory errors. Data is lost or corrupted on the hard drive. There is trouble communicating with modems or peripherals. The system suffers from chronic hardware failures.

4. Steps to replace the Power Supply of a computer Disconnect all the cables that are connected to your desktop and open up your desktop computer. Look for the power supply which is a big metal box with lots of wires coming out of it. Write down the power rating on it. Make note of where all the wiring that goes from the power supply connect to.

5. Steps to replace the Power Supply of a computer Disconnect all the cabling from it. Unscrew the power supply from the case.

6. Steps to replace the Power Supply of a computer Take a new compatible power supply and screw that it. Connect all the wiring back. Close your case. Reconnect all your cables.

7. Suggested Websites http://en.wikipedia.org/wiki/Computer_power_supply http://windows.microsoft.com/en-US/windows- vista/Troubleshoot-power-problems http://windows.microsoft.com/en-US/windows- vista/Troubleshoot-power-problems http://www.wikihow.com/Install-an-ATX-Power-Supply http://computer.howstuffworks.com/power-supply.htm