grinding fan noise

The cooler has dust. I removed the case fan prior, it's not making noise, i also opened the case to make out if its the PSU, and its the CPU cooler fan. It has been making this noise more than a year. Do I need to take the whole thing apart and reapply thermal paste (also vaguely remember...

Hey there, my CPU's fan is malfunctioning from quite some time and it is bothering me very much. After cleaning it, it seemed to work but after using PPSSPP for a while, it is malfunctioning with grinding sound. Also, my CPU temps seem to go for a max 97C and min 60C which is quite a lot. After...