Invalid scan code detected, expected: 003e, read: 003f

Question

Hi, my keyboard has started to malfunction recently. When I press the ‘j’ key it registers both ‘j’ and ‘#’ together, and various other keys are linked together too. It’s not connected to any program I’ve installed or anything.

When I ran Dell Diagnostics it came up with a series of invalid scan codes (message above), but didn’t say how to fix the problem! I’ve tried reinstalling the keyboard drivers, running system restore and all the troubleshoot guides but to no avail.

Dell told me to replace the keyboard, but I’m not convinced it’s faulty – seems like a software/system issue to me. Does anyone have any suggestions? Thanks!

ejn63 · Answer

Dell is correct - replace the keyboard.

pcgeek11 · Answer

The keyboard works on a Matrix of crossing wires, when you press a key it connects one vertical wire and one horizontal wire. These matrix points are how the keyboard decoder knows which key you press and sends the data to the PC. That is why during the keyboard test it is getting the incorrect code for the key you pressed and it knows that it is getting the incorrect code.

Replace the keyboard and this will solve your problems. It is the Keyboard, the Ribbon cable, or the Decoder. The ribbon and Keyboard come together, The decoder may be also. Keyboard Decoders rarely fail.

pcgeek11

Message Edited by pcgeek11 on 02-27-2007 03:12 AM

Locked Topics – Laptops General

Invalid scan code detected, expected: 003e, read: 003f

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