Laptop cooling fan constanly on

Hi--
I have a Portege Z930-BT9300 and my fan is constantly on even if the laptop is idle or just booted up. No programs are running and the laptop is also not even hot and the fan is on full blast. It is annoyingly noisy. I checked PC Health Monitor and temperature is around 40-60% and the fan is on 90% all the time. I have tried all sorts of tweaks in the settings to bring down the temperature and performance - processor settings, battery settings, power settings, fan settings and nothing helps. I have also updated the BIOS and TVAP. I tweaked the settings there for the fan and performance and still nothing. These are all suggestions that I saw from the forums and research I made. Also, I have consulted an official Toshiba service center to look into my laptop and they said there is nothing wrong with the fan. In my research, this problem is not exclusive to Portege laptops. I have emailed Toshiba in the "contact us" address and even facebook but I have yet to receive a reply.
Does anybody know a solution to this fan problem?
Julius

Dokie, I agree with your philosophy,
Here's some more from my many years with laptops.
Little dust is found in a laptop (except on the keyboard dust plate), but ANY almost invisible dust on the fan blades will have a major impact on blade efficiency. Every 2 years I blast high pressure air with a straw onto the fan blades. You don't even have to open the laptop if you're lucky to see the blades through the air ports. Makes a big difference in terms of cooling, fan wear, and battery life.
I have win 8.1 (not by choice) but would be very happy with win XP SP3.
At bootup my laptop uses less than 1.4 GB of ram instead of over 3 GB by turning off superfetch and Toshiba HDD preloading. Even though I have 16 GB ram (not my choice). Less HD wear, battery use, and less time to de-/hibernate. Also, HD is set to turn off after 1 minute; confirmed on my dell laptop with HD-activity LED, I don't trust the Toshiba HD activity indicator.
My Firefox browser uses ram as cache so that it doesn't use the HD, and it should be faster.
I still don't reliably know if 2GB dedicated ram to the nvidia graphics card is being used. Intel HD graphics drivers doesn't see it but NVIDIA does. Only the latest driver from yesterday seem to help, and with reduced power consumption. I'm not sure if Intel or nvidia graphics drivers are being used right now; although intel had a higher rating in device manager.
I have seen many people get their laptops stolen in coffee shops. I got mine stolen after putting it in my paranoid-friend's jeep with tinted windows and alarms. The thief saw me put in the back and busted the window; but did not steal anything else.

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