Can you recommend any quiet/silent laptops?

Hi
I am an audiologist and do some audiometric testing in a patient’s home enviroment. In such circumstances the laptop is sitting nearby because I record the results into it. Then the fan kicks in (even though it doesn’t seem to be under any significant load) and sometimes, depending on the patient’s level of hearing, it may be audible to them. This is not ideal and I would like to find a solution.
I am finding it difficult to find reviews of laptops that specificaly mention noise levels.
Can anyboby please suggest any models that they have found to be unusually quiet? It does not need to be particularly high spec.
Thanks for your help.