Why Is My Computer Getting So Hot? 5 Fixes for an Overheating PC

If your computer fans sound like a jet engine taking off, or if your laptop is becoming uncomfortably warm to the touch, you’re dealing with overheating. This isn’t just annoying; it’s a leading cause of hardware failure and "thermal throttling," where your computer intentionally slows down to save itself from melting.

Here are 5 easy fixes to cool down your computer and keep it running smoothly.

1. Clear the Dust (The "Deep Breath" Fix)

Dust is the #1 enemy of computers. It acts like a thermal blanket, trapping heat inside your machine and clogging up the fans that are supposed to push it out.

The Fix: Turn off your computer and use a can of compressed air. Direct short bursts of air into the vents and fans.
Pro Tip: Never use a vacuum cleaner! Vacuums create static electricity that can zap and kill your computer’s internal parts.

2. Check Your "Surface" Habits

Where you put your computer matters. Many laptops pull cool air from the bottom. If you use your laptop on a bed, a pillow, or even your lap, you are likely blocking the very vents meant to keep it cool.

The Fix: Always use your laptop on a hard, flat surface like a desk or a tray. If you must use it on your lap, consider a cooling pad with built-in fans to help circulate air.

3. Find the "Resource Hogs"

Sometimes the heat isn't caused by dust, but by your "brain" (the CPU) working too hard. If a program gets stuck in a loop, it generates constant heat.

Windows: Press Ctrl + Shift + Esc to open Task Manager. Look at the CPU column. If an app is using 90-100%, right-click it and select End Task.
Mac: Press Cmd + Space, type Activity Monitor, and check the % CPU tab.

4. Lower Your Power Settings

By default, many computers are set to "High Performance," which keeps the processor running at top speed even when you're just reading an email.

Windows: Go to Settings > System > Power & battery and switch the Power Mode to Balanced or Best power efficiency.
Mac: Go to System Settings > Battery and enable Low Power Mode (available on newer MacBooks).

5. Reapply Thermal Paste (For Older PCs)

If your computer is more than 3–4 years old and still running hot after cleaning, the "thermal paste" might have dried out. This is the gooey substance that helps heat move from the processor to the cooling fan.

The Fix: This is a slightly more advanced step, but many beginners successfully do it by following a YouTube guide for their specific model. If you aren't comfortable opening your device, a local repair shop can do this for a small fee.

When is it too hot?

Most computers have a safety switch: if they reach a certain temperature (usually around 100°C or 212°F), they will simply shut off without warning to prevent permanent damage. If your computer is turning itself off randomly, stop using it immediately and try the cleaning steps above.