Hi,
Does this issue continue if we try to use an external keyboard?
Basically, this issue may occur if Microsoft Office is not activated. Are you using
a trial version of the software that has now expired? To verify whether your Office 2010 is activated, go to File > Help, at the right side pane, it will show you whether your Office is activated. If your Office is not activated, please check
the article given below on how to activate Microsoft Office:
http://support.microsoft.com/kb/927921
Hope this helps.
Regards,
Steve Fan
Please remember to mark the replies as answers if they helped.
If you have feedback for TechNet Subscriber Support, contact
tnmff@microsoft.com.