How to Build A Budget Gaming PC

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The Case – CoolerMaster MasterBox Q300L – Micro ATX Case

Grab your case, remove screws from case both sides, remove side panels, and remove the packet of screws/washers and cable ties. Use this opportunity to find an unpainted piece of your case (if possible) so that you can tap to discharge yourself before installing your precious components.

Removing the I/O panel is not necessary (Where the USB ports are), slide it out from stock location, and choose a location you would prefer, thread the wires through the cable rooting holes as you see fit.


Case Fan – Arctic P12 PWM – 120mm

Discharge yourself!

Then install your case fan(s) or water cooling radiators using the screws provided inside, at the front of the PC, at the bottom, or wherever you would prefer, ensuring that you place it with the arrow on the fan pointing towards the inside of the case,

Tie the cable to the top of your case using one of the cable ties provided with your motherboard on course to the case fan port which will be located on your motherboard.

In the picture below, from left to right, you can see the CPU power cable, the case fan cable, and the CPU fan cable.

Upon retrieving your motherboard you should find some paper which should display where the case fan must be plugged into, unless you bought a second-hand motherboard and they did not provide it.


Motherboard – MSI B365M PRO-VH mATX

Discharge yourself!

And get your motherboard out from its packaging, open up the CPU “socket cover” and install the CPU on to it, ensure its the correct way up, take off the cover after you install the CPU. Follow the instructions from your motherboard provider. Be it the seller or your handy paper manual.

Retrieve your packet of Screws, washers, and cable ties and screwdriver, the screwdriver extension, and however many motherboard “risers” your motherboard requires from the packet.

Ensure you screw in these risers in the positions needed, by using a “by-eye” surveyance, also there may be markings inside your case, which you can use to make sure the screws are in the right place.

Install your motherboard backing plate with the portholes aligned to the motherboard ports. (See below)

Line up your motherboard in accordance with where you put your “risers” inside your case, making sure the ports are facing the backing plate.

Now using the screws provided in your packet, screw in your motherboard to your case, taking care not to drop any on to it. One or two screw placements may give you a hard time, if so apply considerable pressure on to the screwdriver and turn very slowly.

Take care to not overly tighten the screws, as this may cause distortions and unnecessary tension on the board.


CPU (Central Processing Unit) Cooler – Arctic Alpine 12 CO CPU Cooler – 2.700 RPM

Discharge yourself!

Then install the CPU Cooler on top of the CPU on your motherboard, take 2 minutes to carefully push the 4 prongs in all together until they click then route your cable on to your case (if necessary) and plug the cooler into your motherboard via its cable into the CPU fan port named “CPU FAN1” (Intel 115X sockets).

If you can not find the CPU fan port please refer to the photo below which shows from left to right the CPU power, case fan, and CPU fan cables


RAM (Random-Access Memory) – Crucial Ballistix DDR4 16GB 8GB x2 RAM

Discharge yourself again!

Now you are going to Install your RAM modules on to the appropriate positions on your motherboard, Remove the protective casing from the RAM sticks (if there is any), double-check the RAM pins match the motherboard ports.

Looking at the photo below you will see 3 long, thin ports; one is for the GPU, and the others two, which are side-by-side are for the RAM. Familiarise yourself with both types and insert your RAM into the correct location.

Ensure the RAM sticks “click” into place before moving on.


SSD (Solid-State Drive) – Crucial P2 500GB NVMe SSD

Discharge yourself!

Take care to not overly tighten the screw as this may cause distortions and unnecessary tension on the SSD.

Install your SSD on to your motherboard as shown in the picture below if using the same motherboard we are, slot it in then screw it down until secure, using your small screwdriver or knife.

So far your PC should look something like this! Case fan and motherboard attached with the CPU, CPU cooler, RAM, and SSD installed appropriately.


PSU (Power Supply Unit) – EVGA 500W 80 Plus Certified PSU

Discharge yourself!

Install PSU and screw it in, some cases may have a bracket, others don’t. Ensure the PSU fan is facing the bottom of your case unless there are no ventilation holes, if the bottom of your case does not have ventilation holes you will need to ensure the fan is facing upwards, towards the inside of the case.

You may use the instruction manual for your case for further details if one was provided.

Untangle the PSU cables and thread the large 20+4 pin main motherboard cable through the side of your case and back into the main container appropriately to save space and create organization.

Next, you should run your 4+4 pin CPU power supply cable through the same hole as the 20+4 cable and back into the main container via a top hole and plug it into the slot called “CPU PWR1”.

You can now plug in your fans while you’re at it, although you plugged in your CPU cooler fan already during a previous step. On the motherboard, we are using the CPU cooler fan goes into the port called “CPU FAN1” & your case fan goes into the port named “SYS FAN1”

If you need to, please refer to the photo below, which shows from left to right the CPU power, case fan, and CPU fan cables.

Don’t forget to use some cable ties to keep everything nice and organized, unless you live on edge and do not care.


GPU (Graphics Processing Unit) – ASUS Radeon RX 570

Discharge yourself!

Now you should poke out the covers on the back of your PC case, please be careful to not hit your motherboard! The GPU port covers are defined by the +’s on them (see below), if you’re using more than one GPU you will need to remove more.

Some GPU’s have a cover over their main connector so you may need to remove it, plug your GPU into the PCI-E port, its the thin, long port that remains after installing your RAM, look at the fitting on your GPU and you’ll see where it needs to go, and secure it on to the back of your PC using the screw shown in the picture above, use the extra piece of metal provided if needed.

Now you’ll need to supply power to your GPU, plugin the corresponding cables from your PSU, in the photo below from top to bottom you can see the 20+4 pin motherboard power cable, the I/O USB cable, and most importantly in regard to this step; the GPU power cable.


ICH (I/O Panel)

Discharge yourself!

The cables from your case I/O panel, such as the USB, headphones and power buttons, etc, can now be connected, please consult your motherboard instructions for the right slots. Sometimes it can be easier to do this prior to GPU installation, depends on the case and the size of your hands as it is sometimes a bit fiddley.

in the photo below from top to bottom you can see the 20+4 pin motherboard power cable, the I/O USB cable, and the GPU power cable.

Route the I/O USB cable through the case to save space then plug it into the port on the motherboard.

Route the Audio power cable (shown below on the left) from your power supply unit (PSU) through the side of your case; so its out of the way, into the port on the motherboard displayed.

Route the I/O Cable (shown above on the right) from your I/O panel then either through the side of your case then into the port shown, or if the cable is short enough, plug it right in without any cable management.


Spare Cables

Discharge yourself!

Retrieve the other “spare cables” gather them all into one big bunch, hold them together, and then tie them to the side of your case ensuring they fit nicely within your case parameters because the case panel we removed at the start of the guide must fit without being forced on.

In the photo above, you can almost see the “spare cables”.

Where they are located in the picture above is where we decided to store them.


Installing Windows & Drivers

You’ll be happy to know this is the final time you should……..Discharge yourself!

Firstly you’ll want to plug in an ethernet cable from your Wi-Fi router to your PC, install a USB Wi-Fi adapter, or ideally a PCIe card, which fits in the port on the motherboard shown below displayed as “PCI e3”. You will need to break off another backing panel to fit the PCIe card for it to fit correctly.

If its too much trouble and you do not require 6 USB slots, a USB Wi-Fi adapter will be appropriate.

Once Wi-Fi is online, retrieve your USB drive or disc which has the operating system of your choosing on it.

If you have a friend with a PC or another PC or laptop of your own, buy and download the operating system of your choice online, move it onto an empty USB drive which has at least 8GB of storage, and plug it into your new PC.

If you buy your operating system from an offline store, simply insert the disc into the disc drive. However, in this guide we have not covered disc drive installation.

If you require assistance obtaining the data for your USB drive (Windows 10) you may visit here!

If using an MSI motherboard like we are, upon powering up your PC, you can enter the bios by pressing the delete key or F2. Once there, you may need to reconfigure the first boot option to be the USB drive or the DVD drive. After that, save the settings and restart your computer.

Upon powering up you shall now be greeted by the windows launcher, please continue.

Finally, you’ll want to take a visit to the manufacturer websites of all the components used to create the machine and download the latest drivers.

Additional: Visit this site to see how your PC ranks against many others!

We hope you enjoyed this guide!



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