What you'll be looking for in your list of 'apps' is this "ASUS Precision Touchpad".
So go to settings, apps, and wait for your apps and features to load what you have installed. You should see the above. Otherwise go here to [https://www.asus.com/au/Laptops/ASUS-VivoBook-Max-X541UA/HelpDesk_Download/|this] download section, it is for your model laptop. And use that to download your new device software. I suggest you do not update your bios unless you are very confidant of doing so. I've read a few problems with this number. (303)
Here is a good website that explains what Code 45 is and how to fix it, by running troubleshooter.
[http://www.thewindowsclub.com/hardware-device-not-connected-computer-code-45|Code 45]