To get into the BIOS, when you first turn on the laptop, keep hitting either "F1" or "DEL" key(it'll say something like "Press 'F1' to enter setup") until you get in. It's normally a blue or grey screen; you'll be able to tell cause it looks like an old DOS program. Once in there start looking around for system fan or CPU fan RPM. Find out what they're spinning at. You should also be able to take a look at the temp sensors in there. Note what everything is running at, then go online to either Toshiba support or a forum to try to find out the proper RPM's you need to be running at the for the different fans. When you exit the BIOS, just make sure you DISREGARD changes 😉
**Edit** You could also grab a can of compressed air and when the laptop is off, blow out any visible fans you can see on the sides or back of the laptop case.