Even if it was totally dust clogged and the heat compound had totally dried, it would still boot up and attempt to run until the temperature got too high.
6 beeps traditionally was keyboard failure (in days of old), try another keyboard if you have one available or make sure no keys are stuck down etc.
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell
When the debate is lost, slander becomes the tool of the loser. Socrates