Invalid serial Number ?

I have A dell computer I bought Last may,2009 came with a proper Vista Lic thru Dell now I have upgraded to windows seven 64bit , It has told me twice I have an In valid serial Number , Spoke to folks I got software from and was told someone else had had this problem I should contact Microsoft technical support via tel fone But the telefone number I have does not work , Can you help solve this problem here,or could you give me the right telefone Number to call them Thanks

Was the upgrade from Dell? Were there precise instructions to follow?

Try this;

Activate Windows 7 by Phone

Frostmourne said:

Was the upgrade from Dell? Were there precise instructions to follow?

No The upgrade was not from Dell. I bought the upgrade off the Web, Have done this before and have not had problems before: Thanks for your time

richc46 said:

Welcome,
You can try the appropriate phone number, here. I will be back to give you a piece of software that will get the actual key used to activate your computer.

Microsoft Volume Licensing - Activation Centers
The above numbers seem to be valid for individual purchases, too. At least you could ask them, the correct number if the one given is not valid.

Download and use number 1, JellyBean. I will give you the actual number used to activate your computer.

Key Finder Programs - Top 13 Free Product Key Finder Programs - Keyfinder Software

A little concerned Do I have to reload the software or just run this program?

theog said:

Try this;

Activate Windows 7 by Phone

Thank you very much:

You are welcome.

Got a hold of microsoft and got the code changed and running fine : till next nasty message{lol} Thank you all: