I have a problem with certain keys on this laptop.When I strike the z Fn / or arrow keys a signal is sent to the laptop which appears different from the key itself.It locks up the keyboard thereafter because it thinks the key(s) are depressed.I have traced the foregoing with a keyboard test software application from passmark software.com. It's shareware on trial for 30 days.According to the diagnostic software, striking one key shows the other offending keys perm. locked in the depressed position, sending signals. But they have not physically been touched.Oddly, pressing the A key and then the Z key together (in that order) released the jamming.I've already tried uninstalling the keyboard driver and I've run a complete AVG anti-virus test - all clear. It's XP and all updates are in place.What next - can you help?
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