It sounds like something is overheating and the fans are increasing their speed to try and keep the temperatures under control.
when the computer starts to get loud, and post back with all the temperatures and voltages.
Open the case and blow a can of compressed air around the motherboard slots, heatsink and fans. If there's a buildup of dust, this will cause the temperatures to rise to the point where they affect performance.
Are you using a cooling pad under the laptop?
btw, I've deleted your other 2 identical posts in the other forums which are not needed.
EDIT: sorry louge1953, I didn't see your reply there. Great minds think alike