My computer has done the same as what you have described. Since the fan runs constantly, it pretty much attracts the dust particles in the air...Should not be very expensive to have someone open it up and vac it out.
It sounds as if it is getting to hot, which is why it shuts itself down. Usually when this happens, it needs to be cleaned. Find a good computer person/place, and take it in for cleaning. Hope this helps!
Hello!!!
Thanks everyone for the warm welcoming hello's! I have missed the Forums here...time to catch up I believe. Nice to see some familiars here.