I dell inspiron 15R (5537) laptop with touchscreen which was working until 2 weeks ago. Since then I upgraded to Windows 10.

I have checked device manager and there is nothing listed for touchscreen driver.

I have tried several times and updated the drivers from dell website. 

I even uninstalled all of them and reinstalled through the Dell update tool.

BIOS is updated.

On windows setting info section shows there is no touch and pen device.

I even reset the system which installed windows 10 again.

I have tried all the methods available but touch screen is still not working.

Please help