Laptop "Thermal Throttling" (Slows down when hot)
4.5
The laptop starts fast but becomes very slow after 10-20 minutes of use.
Symptoms
- Sudden slowdown
- High fan speed
- Hot chassis
Possible Causes
- Dried thermal paste
- Clogged heatsink
- High ambient temp
Step-by-Step Fix
1
Use on a Hard Surface
Never use a laptop on a bed or carpet; it blocks the intake vents.
2
Clean the Heatsink
Remove the back cover and blow dust out of the copper fins.
3
Repaste the CPU
Advanced: Replace the old thermal paste with high-quality compound (e.g., Arctic MX-4).
When to See a Technician
Thermal throttling is a safety feature to prevent the CPU from melting itself.
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