=== ***2. Poor Cooling or Dust Build-up*** ===
***Symptoms***: Heat from keyboard/base, fan always on or unusually loud.
***Causes***:
Dust blocking vents or fan.
Thermal paste dried out.
Faulty or weak cooling system (especially in older or thin laptops).
***Fix***:
Clean vents with compressed air.
Use a cooling pad.
Consider repasting CPU