Test it by starting excel in safe mode:
Close excel
windows start button|Run
excel /safe
and test it a bit.
If it works ok, then maybe it's an addin that's running.
The next step will be doing some detective work.
Chip Pearson has some notes on how to diagnose startup errors:
http://www.cpearson.com/excel/StartupErrors.htm
And Jan Karel Pieterse has more notes:
http://www.jkp-ads.com/Articles/StartupProblems.asp
Mesak wrote:
>
> Normally I can undo all event. This problem occur after I select copy and
> past or past special value. The undo bottom is disabled. How can I fix this
> problem?
--
Dave Peterson