What's the component on that side?
If the CPU, check the CPU usage (per process) in task manager. I
i cleaned the fan and everything inside in a repair shop , am operating the laptop in cold room and with cooling pad under . its overheating only on the left side even if am only surfing the net.
it get so hot that the usb ports there stop working ,
it cant be dust as it was cleaned and checked again by another shop . what other problem may cause this? please help