what cpu temperature is normal, mine idles at 65

65 at idle is on the warm side but not dangerous. Most chips don't throttle until somewhere in the 90s. A desktop with decent cooling usually sits around 35-50 doing nothing, laptops run hotter and 50-65 isn't unusual for them. Things to check: - is it actually idle? open Task Manager and see if something is chewing CPU in the background - dust in the heatsink and fans, that's the most common cause by far - on a desktop, whether the cooler is seated properly. If temps shoot up the second you open anything, the paste or mounting is likely bad - the power plan, some boards push the voltage high even at idle What CPU is it, and is it a laptop?