Cannot access Xbox Live with old Gamertag

If you signed in and it showed a default gamertag and no score that means the email you used to sign in was not the email on the old account.

With that being said if you are not sure of the email on the old account but know the gamertag you can contact xbox support by going to support.xbox.com/contact-us and give them your old gamertag and if they can verify ownership of the account they can give
you the email thats associated with that gamertag

The old Xbox cannot access live now, any other ideas? Thanks

[quote user="DarkhavenX666"]

So if I have a VERY old Xbox gamertag from circa 2002 (Darkhaven3) which I have never used on Xbox 360, would I be able to change my current Gamertag (as in, legitimately buy a change for 800M$P) to this old tag?

[/quote]

No. You cannot join Xbox LIVE Gamertags. Unless recovered that gamertag with the Windows Email details to Xbox LIVE and
then paid the 800 Microsoft Points to change the 2002 Gamertag to something else, and then paid another 800 Microsoft Points ot change your current gamertag to the old one.

But all that would achieve would just be changing your gamertag to your old gamertag and that is all. Nothing else would be transfered from your 2002 Gamertag to your 2012 Gamertag, like Xbox LIVE Tenture (number of years on Xbox LIVE). That would all remain
on the recovered 2002 Gamertag.

Banned consoles cannot access Live.

Because a console is banned does not mean an individual's gamertag was banned. The two are not linked that way. If a console is banned but the gamertag is not banned, the gamertag can access Live from an unbanned console.

Assuming the gamertag isn't banned, the banned console owner can buy another console, and assuming they abided by the Terms of Use, continue using Live with their gamertag.

Nope if you read the warning of the migration once you migrate you lose access to previous downloads only by keeping the Old console could you keep the old dlc and no moving it to a USB drive will not solve the issue

Clearly stated that you cannot redownload the content nor is there refunds for migration and content

To move to a new console the old gamertag and redownload the content and remain on live at all times