A user reports that their laptop's keyboard is typing incorrect characters. Before disassembling the laptop to inspect or replace the keyboard, which of the following initial steps should the technician perform to troubleshoot the issue?
Press the Num Lock key to see if it resolves the issue.
Update the BIOS firmware to the latest version.
Check the keyboard layout settings in the operating system.
Disassemble the laptop and check the keyboard's ribbon cable connection.
The initial step to troubleshoot a keyboard typing incorrect characters is to check the keyboard settings in the operating system. It is possible that the keyboard layout has been changed to a different language or layout, which might cause characters to be interpreted incorrectly. While updating drivers or checking the Num Lock key can resolve some issues, they are unlikely to cause incorrect characters to be typed. Moreover, disassembling the laptop to check the connection might be necessary only if initial software checks do not resolve the problem.
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What are keyboard layout settings, and how do they affect typing?
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How do I check and change the keyboard layout settings on my operating system?
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What might cause a keyboard to type incorrect characters aside from layout settings?