I have a Compaq Presario C700 which runs very hot and sometimes switches itself off. I have opened the laptop to ensure there is no dust or dirt in the fan or fins. I have cleaned and replaced the thermal paste on the heat sink but it can still run at up to 95 degrees Centigrade when running a processor heavy process, such as installing Office.
The air coming from the fan doesn't seem to be that hot so I am wondering whether I should replace the heat sink. Would that be a possible solution?