cooling fans that are ramping up to high rpm are doing their job typically. it may indicate that there are higher temps from either a high workload or just not properly cooling of components its there to cool down. when is the last time you serviced your laptop? dust/ debris, changing of thermal paste? id start there if the answer is over a couple of years. many tutorials to assist with this basic servicing, model independent. if you dont feel comfortable, a local repair shop can service relatively cheaply.