How to Install a New Power Supply
Upgrading components on your desktop computer, and doing it yourself, can be very rewarding. If you are upgrading components that use up a lot of power, like a video card, you may need to install a new power supply to handle the load. Most computer power supplies will list its maximum wattage. You may need to calculate your computer's power usage by adding up the maximum power usage of all your components. That number will be your guide when searching for the right computer power supply. Certain computer cases will only accept compatible power supplies. You can determine which type of case you have by examining the motherboard for an information tag. When you're ready to install your computer power supply, use these simple steps to help you along.