Time Machine failure transfering to new computer

Hello,
I was having a lot of problems with my 2009 Macbook Pro for various reasons that lead to a lot of random restarts and frozen screens, I took it in multiple times and nothing came of it so they gave me a replacement one under Apple Care. So my situation is that I have TimeMachine and had many successful backups before I recieved the new computer, but during the last backup on my old computer it froze up. Now I am trying to get that information from my old computer onto my new one and Time Machine is saying that my backup is damaged.
Is there a way I can get the information that would still be on TimeMachine on to my new computer despite the failed most recent backup?
(Migration Assistance is not showing my prior saves on my timemachine, saying I need to "make sure it is not currently mounted by another machine", which I assume that it would be mounted to my old (now gone) computer.)
So also is there something I need to do to unmount it or how to access it in a way to solve the previous problem.
Thanks for your time

watsonbr wrote:
After logining in the information for my time machine it has all the devices that have been backed up on it,
Sorry, I'm not sure what you mean by that. Where are your backups (an external HD, a Time Capsule, a Network Drive, or ??).
And/or, take a look at Time Machine - Frequently Asked Question #14 -- can you tell me which window you're seeing that on? Screen title or paragraph number is fine.
when I click on my old back up it says "Cannot be open. If it is a password protected backup you entered the incorrect password. Otherwise the backup may be damaged."
Is that on the same window?
For the migration assistance program the time machine disk does show up under the select you system screen. But then under the same page I click continue and then it only lists my other devices.
Ah, do you mean you've backed-up more than one Mac to the same place, and when you select that line, you see only the others, something like this:
I do not currently have access to my old Mac but I am seeing if I can get it back.
Good. I hope you don't need it.
Please clarify as above where your backups are, if there are multiple Macs there, and whether the backups were made over a network or locally (ie, connected directly to your Mac via USB, FireWire, or Thunderbolt). Then we can dig deeper to see if we can find your stuff.

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If you have more than one user account, these instructions must be carried out as an administrator.
Launch the Console application in any of the following ways:
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☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
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Time Machine failure transfering to new computer

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