Reduce the fan noise in HP TouchSmart TX2z with a simple trick

One of the most commonly reported issues with the HP Touchsmart TX2z series convertible tablet PCs is that the fan noise is too loud. Luckily, it’s not because the notebook overheats like the older TX series notebooks which had Nvidia graphics but the noise can be annoying none the less. There isn’t almost no noise when the TX2z is used on battery but increases tremendously when plugged in. Turns out, you don’t need to apply any thermal paste to your CPU or do any undervolting to fix it. Atommic from the TouchSmart Dev Zone has a simple fix which involves disabling the modem software. Here’s how it works:

  • Type msconfig in the Start menu and hit enter.
  • Navigate to the Startup tab in System Configuration. Find SM56 Helper Win32 Utility and uncheck it. Do it only if you don’t use the dial up modem. You’ll notice a drastic drop in the fan noise after you restart your notebook.
  • If you use the Dial up modem, then open up the task manager, navigate to processes, select SM56 Helper Win32 Utility and click on end task. Follow this step when you’re not using the modem and want to cut down on the fan noise. You’ll see an immediate drop in the fan noise without having to restart your computer.
Some people have also reported that turning the fan setting in BIOS from ‘Always On’ to off also helps, but the fan does make a noise when you use your notebook on the High Performance setting. Also try using your notebook with the HP recommended or ‘Balanced’ power plan in Windows. It provides the best performance/power ratio for normal computer usage.
Using Windows 7 also helps when compared to Windows Vista since the latter just makes the fan spin at full speed most of the time for no reason.