A hot-running desktop isn't just noisy — sustained heat throttles performance and shortens the life of expensive parts. Here's what causes it and how to fix it for good.
What Causes a PC to Overheat- Dust-clogged fans, heatsinks and filters restricting airflow.
- Dried-out CPU/GPU thermal paste after a few years.
- A failing case or CPU fan, or poor cable management blocking airflow.
- A cramped or hot location, or an underpowered/failing PSU.
- Thermal throttling — the CPU/GPU slow themselves down, killing performance.
- Random shutdowns and crashes to protect the hardware.
- Long-term component wear — especially the GPU, capacitors and drives.
- Deep internal cleaning of fans, heatsinks and filters.
- Fresh premium thermal paste on the CPU (and GPU if needed).
- Replacing worn fans and improving case airflow; checking the PSU.
Monitor temps with a free tool — sustained 85–90°C+ under load means it's time to act. A professional clean + repaste typically drops temperatures 10–20°C and restores full, stable performance.
Need a Professional to Handle It?Prefer an expert? Xigox offers professional computer repair in Mumbai with a free diagnostic and a fixed quote before any work — genuine parts, a 90-day warranty and free doorstep pickup across Mumbai, Thane & Palghar.
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