|Hi Dee, |
I note your comments above regarding cleaning. However, often missed (as it is out of sight) is between the fan and rear of the Heatsink vents.
Because the vents are so close, larger dust particles build up into a thick wad of fluff. and cannot be removed without dismantling the Laptop.
Using an airspray from outside does not work and could be detrimental, as wad is so thick, it could be blown backwards without breaking up and jam the fan. Anyway it would not be wanted inside the Laptop and there is nowhere else for it to go.
There are Youtube videos of this problem.
Good Luck - Keep us posted..