'S' KEY not working in win xp office packages

in one of our staff computer found that if you press shift+s, the key is not working
we tried even changing keyboard and found that it is not keyboard issue
please advise how to rectify this
Jinesh Kumar KochathRegional IT Manager Asked:
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Brian PiercePhotographerCommented:
Does the Shift-S work in other things - like notepad and the command window?
If not then it could be a controller fault and a new motherboard may be needed.

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☠ MASQ ☠Commented:
Is this the only key not working and only when used with shift?

Try launching in safe mode, if it is fixed there you will have to selectively remove and replace services until you find the culprit.  If this is known to have started recently then it should be easier to find which process is doing this.

M$ do disable some keys intentionally but only during install to prevent users entering the wrong CD Keys.
The following keys are affected by this:
A,E,I,N,O,S,U,Z,0,1 & 5
Which could be mistaken for other characters.
Jinesh Kumar KochathRegional IT Manager Author Commented:
let me try these things and come back to u
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Jinesh Kumar KochathRegional IT Manager Author Commented:
in safe mode it is working fine
what is to be done in next, please advise step-by-step
☠ MASQ ☠Commented:
OK - bit more information to help with the troubleshooting:

Is this happening in any program in Windows or just Office?
Is it just shift+s that doesn't work or are there other keys involved?
Does ishift+s produce any character on the screen?  Lower case 's' or no character or apparent action at all?
In all profiles or just one user?
Have any hot keys been assigned either in Windows or Office?
Does the user know roughly when this first happened?
Jinesh Kumar KochathRegional IT Manager Author Commented:
i have create a new user account where it is working fine now
anyway i will split my points to give you all
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