Get a notebook cooler. I have 2 aluminum Zalman coolers that are excellent. Try the no3d option on the boot. Run from flashdrive, SSD or the hard drive. Maybe one of those will help. Another option would be to find a package in Synaptic that might monitor CPU temps. I monitor it in my conky and pop up a buzzing error box on my antiX systems, but that was tricky to implement.