I have a Dell Inspiron 1720 which i bought early 2008. I got fed up with it running slow recently so i did a clean install of Vista Home Premium.
I have just tried to re-install MS Office Home and Student 2007 which came with my laptop when i bought it. I enter the 25 character product key (correctly) from the sticker on the back of the cd wallet but it gives me a validation error and suggests i may have incorrectly entered the product key.
I have performed a clean Vista install before a few years ago and didn't have an issue re-installing Office last time with this very disk
What could cause this?