CPU Overheating Diagnosis & Liquid Cooler Replacement

About the Project

A client reported that their PC shut down when launching games and that CPU temperatures exceeded 110°C. During initial diagnostics, I observed the temperature rise from approximately 50°C to 85°C within five minutes in the BIOS, with temperatures continuing to climb. The computer had not been serviced for four years, so I first removed accumulated dust and replaced the thermal paste. Further testing showed that the overheating persisted. I traced the problem to a failed liquid-cooling pump, which was preventing coolant circulation. I explained the findings to the client, recommended replacement options, and ordered their approved cooler. After replacing the cooling system and applying fresh thermal paste, I configured fan speeds and temperature controls. Gaming and diagnostic tests confirmed that the overheating issue had been resolved.

My Role

I managed the diagnosis, client consultation, replacement sourcing, installation, configuration, and final testing.

What I Did

• ✓Investigated the reported overheating and shutdowns.
• ✓Monitored the CPU temperature rise in the BIOS.
• ✓Cleaned the computer and replaced the thermal paste.
• ✓Identified the failed liquid-cooling pump.
• ✓Recommended replacement coolers and arranged the approved component.
• ✓Installed the new cooler and configured fan controls.
• ✓Tested cooling performance in games and diagnostic applications.