I backed up and restored my lappy using Dell Data Safe to its Factory State. Now to use MS Office, i need to punch in the product key. Help me out how Dell can help me for the same????
If you purchased MS Office with the system, the key should be on a card that came with the system - if you lost that, you're out of luck. Microsoft won't replace (and won't allow OEMs to replace) lost keys.
If it's the Starter edition of Office (ships with many systems for free), no product key is needed.