Portge 4010 Arrow and Backslash keys not working

I have a toshiba 4010 that has all of a sudden had the arrow keys and the backslash keys stop working.  I just upgraded tp xp pro service pack 2 but I can't remember which happened first.  Does Toshiba have a keyboard diagnostics program with its system software, to check if the keyboard is defective or if I have a driver issue?

Any Ideas
lundquicAsked:
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rindiCommented:
Boot to Dos and then do some typing. If you just boot to straight dos you won't have any keyboard drivers loaded and then you can test the keys.
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