I was right in the middle of editing a script and all the sudden my computer shut it self off for no reason at all when i tried turn it back on it wouldn't turn on so i unplug it and plug it back in and it works fine Its never done this before
You probably need a new power supply
dust will overheat your computer.
Really? i have lots of dust in my computer and its not overheating.
Then you must have some really good airflow in it