I finally found a good guide to create a Windows 7 Bootable USB Drive. It is definitely the best on the internet, and has instructions for creating within XP, Vista, and Windows 7.

Visit it here: http://maketecheasier.com/boot-and-install-windows-7-from-usb-flash-drive/2009/01/23

“Windows could not log you in. The trust relationship between this computer and the primary domain failed.”

If you have ever seen this error, and said to yourself:”*@*$&@@ !! How the !*$&@^@ did this happen?” then I am totally with you.

What this means:
Really, I have no idea. Nor why it happens, or why XP never had this issue but Vista and 7 do. Essentially, it’s a security thing when either the client or the server has reasons not to trust the other.

How to fix it:

1. Unplug the computer from the network, and log in using cached credentials.
2. Drop the computer from the domain by changing the domain name to a workgroup.
3. Reboot the computer.
4. Log in using the built-in administrator account (you should make sure you know this before dropping it from the domain! Otherwise, you will need to create this user by alternative means).
5. Join the computer back to the domain,
6. Reboot.

If this fails, you can try another method located here:
http://community.tigranetworks.co.uk/blogs/tim_long/archive/2009/05/16/windows-7-rc-failed-trust-relationship.aspx

“Account Already Exists” error on Windows 2000, XP, and Windows 7/Vista indicates that Active Directory already has the computer listed. You can not have two computers of the same name, even if one is offline. (If the other is online, you will see: “Duplicate Name on Network”. More about this further down)

How you fix it:
Log in to your Active Directory computer, and go to “Active Directory Users and Computers”. Find the computer name you wish to use and delete it.
Return to the computer, and set the computer name as you normally would. (Sometimes, Active Directory changes can take a short period of time before actually taking place. Also, if you have multiple Active Directory computers, you may run across the issue of having to wait for them to synchronize the change).

How to avoid it:
Before changing the name of any computer, you should drop the computer from the domain. The best way to do this is to switch the computer from being on the domain to being on a workgroup. The computer says: “I’m leaving” to the Active Directory server, and Active Directory drops the computer from it’s database.

Duplicate Name on Network:
You must find the other computer name and change it before you can use the name without receiving this error. You should still be able to log in and use the computer with this error, but it is very bad network practice to do so.