Go to Device Manager and look at the Human Interface Devices. There will be some USB devices that end up being the touchscreen. If you change the power options on those so they don't turn off to save power the problem should be fixed.
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Member RevoMaxx is quickly moving up the ranks of Acer Community. He joined us in September and is already making a difference. It's great to see new members like him make a difference only after a few months. Thanks RevoMaxx!