How to Properly Clean Your Computer Inside and Out
Jul 28, 2025 am 02:59 AMTurn off and unplug all power sources to ensure safety; 2. Use a microfiber cloth to dip it in appropriate amount of water or alcohol to clean the outer surface to avoid direct spraying of liquid; 3. Use compressed air, soft brushes and cotton swabs to clean the internal dust, focus on cleaning the radiator and fan, and never use a vacuum cleaner; 4. Keep the environment clean and maintain it regularly and simply to prevent dust from accumulation. Correct cleaning of the computer can significantly improve performance, reduce the risk of overheating and extend the life of the equipment. Be sure to power off, handle it gently and use the right tools during operation. The equipment will run more quietly and stably after the entire process is completed.
Keeping your computer clean — both inside and out — is essential for maintaining performance, preventing overheating, and extending its lifespan. Dust buildup, grime on the exterior, and dirty components can all lead to hardware issues over time. Here's how to clean your computer properly, safely, and effectively.

1. Turn Off and Unplug Everything
Before you start cleaning, shut down your computer completely and unplug it from the power source. For laptops, remove the battery if possible (though most modern laptops have non-removable batteries). This step is critical for your safety and to avoid damaging internal components.
Also, disconnect all peripherals — keyboard, mouse, monitor, etc. — so you can clean them thoroughly.

2. Clean the Exterior Surfaces
Start with the outside. Dust, fingerprints, and spills can make your computer look old and grimy.
- Use a microfiber cloth slightly dampened with water or a 50/50 mix of distilled water and isopropyl alcohol (70%).
- Wipe down the case, monitor, keyboard, and mouse. Avoid spraying liquid directly onto the device — always apply it to the clothes first.
- For stubborn grime on plastic or metal surfaces, gently rub with the damp clothes, then dry immediately.
- Avoid abrasive cleaners, ammonia-based products (like Windex), or paper towels, which can scratch screens or leave lint.
Tip: For keyboard keys, use a cotton swab dipped in alcohol to clean around the edges, or use compressed air to blow out debris.
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3. Clean Inside the Computer (Desktop or Laptop)
Opening your computer requires care, but it's worth it every 6–12 months, especially if you're in a dusty environment.
What You'll Need:
- Compressed air canister
- Soft brush (like a clean paintbrush)
- Cotton swabs
- Isopropyl alcohol (90% or higher for electronics)
- Anti-static wrist strap (optional but recommended)
Steps:
- Open the case (desktop) or access panel (laptop). Refer to your device's manual if you're unsure.
- Use compressed air to blow dust off components like the motherboard, power supply, RAM, and GPU. Hold fans in place with a finger or toothpick while blowing air to prevent overspinning.
- Focus on heatsinks and fan blades — these collect the most dust.
- For stubborn dust, gently brush with a soft, dry brush.
- Use a cotton swab lightly dampened with isopropyl alcohol to clean around tight spots or connectors.
- Let any damp areas dry completely before reassembling.
Important: Never use a vacuum cleaner — it can generate static electricity and damage sensitive electronics.
4. Maintain Cleanliness Over Time
Prevention is easier than deep cleaning:
- Keep your computer in a dust-free area.
- Use a desk with good airflow — avoid placing it on carpets or in enclosed spaces.
- Consider using dust filters on intake fans (for desktops).
- Clean your keyboard and screen weekly with a dry microfiber clothes.
Cleaning your computer doesn't take long, but it makes a big difference. A well-maintained system runs cooler, quieter, and more reliable. Just remember: power off, go gentle, and use the right tools.
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