My acer Aspire V7-481P touchscreen stopped working. I can no longer find the pen and touch settings on my computer, please help.

My acer Aspire V7-481P touchscreen stopped working. I can no longer find the pen and touch settings on my computer, please help, I have tried to download all the drivers on the acer website and it is still not working. The touchscreen previously worked before
but unexpectedly stopped.

touchscreen don't need driver
go to device manager, find Human Interface Device, find HID-compliant touchscreen (maybe under USB input device), try to enable it, click yes and restart PC
If not solved, try to perfrom system restore (back to condition when this PC working fine)
http://acer.custhelp.com/app/answers/detail/a_id/11564/related/1
for more details TS, i suggest contact Acer

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