I tried it in linux mint 17 and windows 10 pe from USB and didn't work. The only thing I haven't tried yet is ordering a new touchscreen to test but figured I would ask if anyone else would know what the problem is before doing that. There are lots of articles like this one that says that the touchscreen drivers just disappeared after the update similar to my problem where they can't uninstall the touchscreen driver because it is not there.
I downgraded the bios to an earlier version and reinstalled build 1709 and still the touchscreen is not working. I even put in a different hard drive reloaded windows 10 using both 17 builds. I took the laptop apart and made sure everything was connected securely. I looked under Human Interface devices, Usb controllers, Mouse and other pointing devices and also set it to show hidden devices and still nothing. I looked under I ran the dell diagnostic test and support assist app and both don't have recognize the touchscreen either. I looked in the device manager and the touchscreen isn't even showing up. I have a Dell Inspiron 7348 where they said the touchscreen stopped working after an update.
