If your touchscreen isn’t responsive or not working how you would expect, try restarting your PC. If you’re still having problems, check for updates:
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Select Start , then select Settings .
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In Settings, select Update & Security , then Windows Update , and then select the Check for updates button. Install any available updates and restart your PC if required.
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If you didn’t have any updates that required a restart, it’s still a good idea to restart your device to make sure any pending updates are installed.
If your touchscreen still doesn’t work, see Surface touchscreen: Problems with touch, or contact the manufacturer of your device.
