Computer Is Overheating — What to Check

If your computer is running hot, shutting down unexpectedly, or the fan is constantly at full speed, overheating may be the cause. Signs of overheating: - Computer shuts down suddenly without warning - Fan runs loudly and constantly - Computer feels very hot to the touch - System slows down noticeably over time (thermal throttling) - Error messages related to temperature Immediate steps: 1. Check the vents — make sure all air vents are clear and not blocked. Computers need airflow. Never put a laptop on a blanket, couch, or other soft surface that blocks the bottom vents. 2. Move to a cooler location if possible 3. Save your work and restart the computer Step 1: Clean the vents Dust buildup is the number one cause of overheating. Use a can of compressed air to blow dust out of vents. For desktops, we can open the case and clean it thoroughly. For laptops, we can clean through the exhaust vents. Step 2: Check Task Manager Open Task Manager (Ctrl+Shift+Esc) > Performance tab and watch CPU usage. If something is running the CPU at 100% constantly, that will generate significant heat. Identify the culprit in the Processes tab. Step 3: Check for malware Malware running intensive background tasks can drive up CPU usage and heat. Run a full antivirus scan. Step 4: Use HWMonitor Download HWMonitor (free from cpuid.com) to see exact temperature readings for your CPU and other components. Safe CPU operating temperatures are generally under 85°C under load. Anything over 90°C is cause for concern. Step 5: For laptops — thermal paste On older laptops (3+ years), the thermal paste between the CPU and heatsink can dry out, significantly reducing cooling efficiency. This requires disassembly — contact us. Contact us if: - The computer is shutting down due to heat - Temperatures are over 90°C under normal use - The fan sounds unusual (grinding, rattling) — this may indicate a failing fan