anyone got any advice...

my PC has gone totally crap slow.

dont think the high temps its running are helping (40 cpu temp)

but other than that its just running really crapply... messenger keep freezing so do a fair few other programmes and is not like it used to be..

any reccomendations - im reluctant to do a full wipe and reinstal as im not sure what ive got on and what i need to replace programme wise.