If it is clean inside, then I would be looking at it... 1. Needing new thermal paste... 2. Needing the fan(s) replaced... 3. The CPU or GPU is overheating and will need replacement (meaning the motherboard may well need replacing.
If it is clean inside, then I would be looking at it... 1. Needing new thermal paste... 2. Needing the fan(s) replaced... 3. The CPU or GPU is overheating and will need replacement (meaning the motherboard may well need replacing.