Can't run Excel

[David Manning]

After installing Windows XP Service Pack 2, I had several
problems. To solve one of them, Compaq had me do a
System Restore to fix a problem with their BackWeb.
After doing the System Restore, when I tried to use
Excel, it asks me to enter User Info. and the Product
Key. After I enter the Product Key, it says it's invalid.

I then uninstalled Excel, and reinstalled it from the CD
that I purchased directly from Microsoft at the end of
June. When I try to use Excel, it still asks me for the
User Info. and the Product Key, and when I enter the Key,
it says it's invalid.

What is the problem?? Please help.

Thanks, David

 

[Frank Kabel]

Hi
I would contact MS directly for this