I have a cheap Toshiba Satellite L-50 series laptop (not sure which one but it has an i5-4200u and a gt 740m with a 700ish gb HDD and 4gb of DDR3, upgraded to 8gb). With firefox open the CPU idles at around 60 degrees celcius while the GPU idles at 63-66. I have windows 10 installed. These temps would look concerning on a desktop, and they still seem somewhat worrying. This with the laptop flat on a wooden desk. I would turn the fans up, but speedfan doesn't detect any fans and neither does msi afterburner (even though I can hear the fan change speed). Should I bother changing the thermal paste in hopes of reducing temps? How bad is the risk that I may damage the CPU/GPU by scratching it?