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1. Shut down the unit

2. Disconnect the cables from behind the monitor
3. Reconnect the cables
4. When able, open the on-screen keyboard and press any of the letters to verify that this has been resolved 

If this is unsuccessful, follow these steps: 

1. While the unit is shut down, disconnect power from the unit and wait approximately 30 seconds
2. Reconnect power and turn the unit back on
3. When able, open the on-screen keyboard and press any of the letters to verify that this has been resolved 

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