How to Build a Personal Desktop Computer

This instruction will teach you how to make a personal desktop computer. There are some steps for you to follow. After finishing assembling all components, you will obtain the computer for yourself and you can design a system more targeted toward your own use.

Steps

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If you want to assemble the well-liked device, you should use Intel i3,i5,i7 Mainboard.
You must choose the correct CPU for your motherboard, and install it according to its instructions. Be careful not to install the CPU in wrong. Not only would your computer not work, it could short-circuit and damage your motherboard.
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the motherboard should have rows of slots that have 2 or 3 sections that are different lengths. Make sure the pins on the RAM cards line up with the pins on the motherboard connector. Don't get the RAM slots mixed up with PCI slots. The PCI slots are usually wider.
Make sure to connect all the connections to the drives and the motherboard.
The motherboard's instructions should tell the position of the motherboard.
There should be separate connections for the power supply and the motherboard. In SATA Hard disk case, should remove the jumper.
The case and motherboard's instructions should tell where to connect the cables.
After connecting the ATA cable to the device, hook it up to the power supply.

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Question
How do I select and purchase the case for the motherboard?
Community Answer
Check the motherboard size, whether it is atx, micro atx, or mini atx, and then check whether the case you have chosen supports that size.
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Question
What is thermal paste?
Community Answer
Thermal Paste is a compound used to fill the gaps and creaks between the CPU plate and the motherboard plate.
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What is the maximum amount of RAM I can put into a PC?
Community Answer
It depends on the limits on your motherboard. Motherboards usually specify the maximum amount of RAM they can take.
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Tips

Try to keep cables neat and tidy for the best airflow
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Read the instructions in CPU box.
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Make sure you have an intake fan on the front of your PC and an exhaust fan on the back.
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Warnings

Do not turn the computer on until it is fully hooked up.
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Do not over press any component into its slot.
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Things You'll Need

Motherboard
Hard disk drive (or solid state drive)
RAM (Memory)
CPU
CPU cooler (optional, CPU may come with one)
Optical drive (this is not necessary if you are able to install the OS with an USB-stick)
Power supply
Case
Screwdriver
Operating system
Graphics card