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1.  [All Guides](/device-troubleshooting)
2.  [Desktop PCs](/device-troubleshooting?category=pc#problems)
3.  PC Build Guide - Choosing Components 

Desktop PCs

build

# PC Build Guide - Choosing Components

## Quick Answer

This guide helps you choose the right components for building a custom PC, covering budget, performance needs, and compatibility.

Please note:  This guide is provided for informational purposes only. Any steps you choose to follow are at your own discretion and risk. If you're unsure, we recommend booking a professional diagnosis.

Line illustration of a desktop tower and monitor with diagnostic reference markings, overlaid with a neutral diagnostic grid marks 

Desktop PC — illustration 

On this page

-   [Quick Checks](#quick-checks-heading)
-   [Guided Troubleshooting](#diagnostic-heading)
-   [Possible Causes](#possible-causes-heading)
-   [Self-Fix Instructions](#self-fix-heading)
-   [Safety Warnings](#warnings-heading)
-   [When troubleshooting isn't enough](#next-steps-heading)

## Quick Checks

Try these fast checks first — they solve most cases.

1.  Set a budget
    
    Decide on a realistic budget. This influences every component choice.
    
2.  Define your use case
    
    Gaming, video editing, streaming, or office work? Your purpose dictates investment.
    
3.  Check compatibility
    
    Use PCPartPicker to ensure CPU, motherboard, RAM, and GPU work together.
    
4.  Consider future upgrades
    
    A good motherboard and PSU make future upgrades easier.
    

## Guided Troubleshooting

Answer these questions to narrow down the issue.

Do you have specific games or apps to run?

YesNo

Are you comfortable with overclocking?

YesNo

Do you need Wi-Fi and Bluetooth?

YesNo

## Possible Causes

Budget overruns

Common 

Without a clear budget, component costs escalate quickly.

Incompatible components

Common 

Wrong CPU socket or unsupported RAM type prevents booting.

Under-specifying

Moderate 

Components too weak for your tasks lead to poor experience.

Over-specifying

Moderate 

Overpowered components waste money without proportional benefit.

Insufficient PSU

Less Common 

Too little wattage causes instability.

## Self-Fix Instructions

Safe steps you can try at home.

1.  ### Select CPU and Motherboard
    
    1\. Choose Intel or AMD based on benchmarks and budget. 2. Select a motherboard with the correct socket. 3. Ensure chipset supports your CPU generation.
    
2.  ### Choose GPU
    
    1\. Research benchmarks for your target games/apps. 2. Consider VRAM: 8GB minimum for 1080p gaming. 3. Check physical size fits your case.
    
3.  ### Select RAM and Storage
    
    1\. 16GB RAM is recommended for modern gaming. 2. Choose an NVMe SSD (500GB-1TB) for your primary drive. 3. Add a larger SATA SSD or HDD for bulk storage.
    
4.  ### Choose PSU and Case
    
    1\. Use a PSU calculator and add 100-200W buffer. 2. Choose 80 PLUS Bronze or Gold rated PSU. 3. Select a case that fits your motherboard form factor with good airflow.
    

## Safety Warnings

-   Always double-check compatibility before purchasing components. 
-   Be mindful of GPU, cooler, and PSU dimensions fitting inside your case. 
-   Do not skimp on the power supply. Cheap PSUs can damage other components. 
-   Consider cooling solutions. Stock coolers may not suffice for high-end CPUs. 

## When troubleshooting isn't enough

If these steps didn't resolve the issue, a professional diagnosis can identify the root cause.

[Start Diagnosis ](/diagnosis?category=pc&issue=other)

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