my brand new office code isnt being recognised. what do i do please?

Normally when it says that its not recognized that means the code you are entering is not correct.

Sometimes 6 can look like G and B look like 8 so you may want to double check that your entering the code in correctly. otherwise you would have to contact support at support.microsoft.com/contact-us

Is it a microsoft-harddrive or is it a third-party harddrive?

If the previous owner formatted it incorrectly, the only way to do that is if it is not an official MS hard drive, then the system would only recognize it as a usb storage device only capable of using up to 16GB of space. That would render the rest of the
hard drive unusable by the console.

Just to be sure it isn't a problem with your console, take that hard drive to a friend/family members house and try it on their console. If it reads fine then there is an issue with your console. If it still doesn't read it is an issue with the drive itself.

I recommend you buy brand new when dealing with the console/hdd. If you go the used route then it is buyer beware.

you should buy slim version for good gaming)

It is the official MS hard drive as it has the Microsoft sticker and the address and all the seals of authenticity so it can't have been formatted incorrectly, I've tried it on a seperate xbox and it has the same error. It's not that it's reading it as a
different source of memory but it just can't read it at all it says there's no memory device inserted :S