Sony VGC-RM1 - Manual (Page 149)

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Troubleshooting
Keyboard
What should I do if the keyboard configuration is wrong?
The language layout of your keyboard is labeled on the packaging box. If you choose a different regional keyboard when you
complete the Windows setup, the key configuration will be mismatched.
To change the keyboard configuration, follow these steps:
1 Click Start and Control Panel
2 Click Clock, Language, and Region, and click Regional and Language Options.
3 Change the settings as desired.
What should I do if I cannot enter certain characters with the keyboard?
If you cannot use the numeric keypad, the Num Lk key may not be activated. Check if the Num lock indicator is off. If the
Num lock indicator is off, press the Num Lk key to turn it on before entering numerals.