I have an XPS15 L502X and I recently installed HWiNFO64 since I have been having trouble with my fans after doing a clean install of Win7. I have clicked on the fan button on the sensors window, and get to the part where Ican adjust fan speed, and click manual control. The fan speed doesn't ever change, however. I put it to the desired spot, and click manual control, and exit, but the fan speed doesn't change. Am I doing something wrong?