Run a spyware scan. Delete all temp files, log, and bak files. That's probably why your fan is constantly running hard. It's because your media player is running at 100% process doing something you're not aware of.
well im scanning now with nortan witch in the end is gonna be no help because my parents didnt renew the subscribion and the same gos with mcaffe wich i have shut off cuz it seems like mcaffe and nortan dont play well together
Low enough meaning keep it below 60* at most. I like to stay under 50* just so I have some headroom though. I would use Avast antivirus and Ad-Aware, both good free programs.