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This wikiHow teaches you how to install a power supply on your Windows desktop. The power supply is responsible for distributing power from the power source to other parts of the computer. Note: with a pre-assembled computer, you don’t need to install the power supply yourself, but there will be times when you need to replace it when it fails.
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Find a power supply for your computer. The type of power supply depends on the case size and motherboard. Therefore, you need to find out the motherboard model to see which power supply is suitable. Usually, you can find a power supply at a technology store or e-commerce exchanges like Shopee or Lazada.
- Check to make sure you buy the right power supply for your current location. Power supplies manufactured for the European market have different voltage settings than the Asian market, specifically Vietnam.
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Preparing instruments. At the very least, you need a screwdriver (usually a Phillips head) to open the case. The power supply is usually located to the right of the CPU case when viewed from the rear. You may also need a different head screwdriver to work with the power supply. Look at the screw that came with the power supply to see if this is necessary.
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Self grounding . This is to prevent static electricity from accidentally damaging the computer’s internal components.
- You can purchase an anti-static bracelet to ground yourself in the process.
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Open the case. You will see the components inside the computer.
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Place the chassis on its side with the components facing up.
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Adjust the voltage switch of the power supply. If the power supply has a voltage switch, set it to 110v or 115v . This is to ensure that the power supply will deliver an ample amount of power without damaging the connected components.
- Not all power supplies have a voltage regulator switch, these types often have pre-set voltage standards depending on the market.
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Find the location to install the power supply. The computer power units (PSUs) are located above the CPU case; This is why the computer power cable is usually plugged into the upper part, behind the case.
- Consult your computer’s manual to locate the power unit, or you can find a rectangular cross-section on the back of the case.
- If you’re removing an old power supply, the power cable on the back of the case will help you locate the power supply.
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Install the power supply. Power supplies usually have a recognizable “back” side with the sockets and fans, as well as a “bottom” side with a fan on it. The “back” side will face the rear of the case, and the power supply “bottom” side will face the components inside the CPU case.
- If you are performing a replacement, remove the old power supply on the computer first.
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Tighten the screws to snap the power supply into place. After mounting the “back” side of the power supply towards the back of the case, tighten the supplied screws to secure the unit in place.
- Many CPU cases also have a separate compartment for the power supply.
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Connect the power supply to the motherboard. Find the main power port on the power supply (usually the one with the largest plug) and connect it to the long rectangular port on the motherboard, then plug the auxiliary power cable into the motherboard.
- You don’t always need to get an auxiliary power cable, it depends on the power supply and motherboard.
- The cable that connects the power supply to the motherboard usually uses a 20- or 24-pin connector.
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Connect the power supply to other parts of the computer. Use smaller cables to connect the power supply to the hard drive, CD drive, and video card in your computer. In addition, if there are other components (such as lighting systems), you also need to connect to the power supply. [1] X Research Source
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Close and reconnect the cables of the PC case. Replace the cover on the back of the case, put the PC case in place, and then connect the peripherals (monitor, mouse, keyboard, etc.) and power.
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Open Computer. If the cables as well as the power supply are connected properly, the fan on the power supply will spin and the computer will start up as normal. If you hear a “beep” sound and the computer remains silent, it is possible that something is connected incorrectly, or that the power supply is not supplying enough power to other components. [2] X Research Source
- ALWAYS use the cable that came with the new power supply. NEVER reuse an old power supply cable as this may damage the motherboard.
- Connections between the power supply and internal components should be snug, but not too tight.
- You may have some cables left over after you’ve installed and connected the power supply to the components in your computer.
Warning
- Note: every power supply contains a lot of capacitors that can store electricity even after the machine is turned off. Never open or insert any metal objects into the power supply vents, or you may receive an electric shock.
- You need to hold the power supply back when removing the screws. The torque generated when you turn the screw can affect the remaining screws.
X
This article is co-authored by a team of editors and trained researchers who confirm the accuracy and completeness of the article.
The wikiHow Content Management team carefully monitors the work of editors to ensure that every article is up to a high standard of quality.
This article has been viewed 3,323 times.
This wikiHow teaches you how to install a power supply on your Windows desktop. The power supply is responsible for distributing power from the power source to other parts of the computer. Note: with a pre-assembled computer, you don’t need to install the power supply yourself, but there will be times when you need to replace it when it fails.
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