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Don't forget to install a power supply when upgrading your components!

By Robert B.



One of the most often forgotten computer upgrades is to install a power supply, one that puts out more watts and/or has an additional cooling fan.

On this page I won't discuss what problems a new power supply could fix or how many watts you might need, but check out my computer power supply reviews for more help on this.


Or if you're looking for a power supply, then I recommend that you search online for good deals. It is not to difficult to install a power supply. First, you need to remove your old one If you have a new case then you can disregard this portion of the article.


(click any image to zoom in)

  • Open up your computer case so you have plenty of room to install a power supply. Also make sure you have your antistatic wrist band on.

  • While removing the power supply, it helps to make a diagram to remember where everything goes when you are ready to install a power supply.

  • Remove the screws holding the computer's power supply into the case. Be sure to support it so that it doesn't fall after the screws have been removed.

  • Disconnect the power supply from the motherboard and from the drives and any fans that it is connected directly to.

  • Carefully remove the power supply from the computer case.

That's it for removing a power supply. And now how to install a power supply. It's not difficult at all, installation is the exact opposite of removing a power supply.

  • Place your new power supply in the same location of the old one. Note the location of screw holes and make sure they line up! Install the screws to secure it in place.

  • Connect the power supply to the motherboard, the amount of connections vary between motherboards, mine has three. Then connect the power supply to all of the drives and any extra fans you might have.


    (Power Connector - 20 pin)


    (ATX 12V Power Connector)


    (ATX P6 Power Connector)

  • Double check all of your work, make sure all connections are good and secure. Also make sure that your power supply is securely screwed in.

  • Plug in your computer and make sure it turns on and everything is running ok. Then continue by placing the computer's case back onto the computer.

Good work, you now know how to install a power supply in your computer! If you want to upgrade yours now that you can handle the installation, I highly suggest that you buy a power supply.





Want even more details to install a power supply?

I've released an e-book that is packed full of step-by-step instructions, photographs, and videos to help you install a power supply and build your own PC.

The details provided above are only a fraction of what you'll receive in the ebook.

If you're serious about upgrading or building a computer, you'll need this guide!

Interested? Read more here...