The num lock (number or numeric lock) can become annoying if you tend to accidentally hit the num lock key on your laptop and turn it on or off. Disabling the num lock completely involves editing the system registry. Before performing such edits, always save and back up your computer information in case you make a mistake, as the system registry controls many aspects of your computer's operation. Once you have disabled the num lock on your laptop, you must edit the system registry again to re-enable that function.
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Close all windows and programs that are running on your computer.
Press the "Windows" key and the "R" key simultaneously to open the "Run" dialogue box.
Type "regedit" without the quotation marks, then press "Enter."
Click the "+" symbol next to HKEY_CURRENT_USER, then select the "+" symbol next to "Control Panel."
Click on "Keyboard."
Enter "0" (the number zero) in the "Value Data" field to disable the num lock after logon, or enter "1" (the number one) to disable the num lock entirely.
Click "OK," then close the registry by clicking the "X" in the upper right corner of the registry window.
Restart your computer. To re-enable num lock, follow the same process, but change the "Value Data" to "2."
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