I have Xerox workcentre pro 128 copier machine and we don't know what the user name and password is. It was reset from default

WorkCentre 7655 7665 7675 Online Support Solution Modify the Printer...
Solution : Modify the Printer's Administrator Password Using CentreWare Internet Services (CWIS) NOTE: This solution assumes the WorkCentre is configured and working properly on the network.

1. From the computer, open an Internet browser window.
2. Enter the IP address for the WorkCentre in theAddressfield, and then press [Enter] on the keyboard. The CentreWare Internet Services window will be displayed.
3. Click on the [Properties] tab.
   
   NOTE:If the Login screen is displayed, enter the user name in theUser IDfield, and the password in thePasswordfield, and then click on the [Login] button.
   
   The default username is "admin" (case sensitive), and the default password is "1111". If it has been changed or forgotten, contact Support.
4. Click on [Security] to expand the list of options.
5. Select [Authentication Configuration].
6. Click on the [Modify] button for Device System Administrator Password.
7. Enter a new password in theNew Passwordfield.
8. Retype the password in theRetype Passwordfield.
9. Click on [Save]. This will be the new password to log into the Control Panel and CWIS.

http://www.support.xerox.com/SRVS/CGI-BIN/WEBCGI.EXE?St=143,E=0000000004704152929,K=9646,Sxi=4,Case=obj(3814)

Solution : Modify the Default Admin (Tools Mode) Password on the WorkCentre NOTE:The Admin (Tools Mode) password allows access to configure network and machine settings on the printer.Xerox recommends only changing the default Admin (Tools Mode) password if absolutely necessary. If the password has been changed from the default password (1111) and has been forgotten, a service call is required to reset the password.
To change the default Admin (Tools Mode) password:

1. Press the [Log In / Out] button on the Control Panel. The Log In window will be displayed. See theRelated Itemsbelow for additional information regarding logging into the WorkCentre.
2. Select [Security Settings] on the left side of the screen.
3. Select [Authentication] from theGroupscolumn and then select [User / Administrator Accounts] from theFeaturescolumn. The User Administrator screen will be displayed.
4. Select the [Account #] field, and then select account number 1 using the keypad on the Control Panel.
5. Select the [Configure Account] button. The Configure User Accounts screen will be displayed.
6. Press the [Clear C] button (several times, as required) on the Control Panel to clear the old password.
7. Enter the new password using the keypad on the Control Panel.
8. If necessary, place a check mark in the [System Administrator (Admin)] and [Account Administrator] check boxes, and then select [Save Account].
9. Select [Close].
10. Press the [Log In / Out] button on the Control Panel.
11. Select [Logout] on the Touch Screen.

https://www.support.xerox.com/support/workcentre-7132/documentation/enus.html

how do i repair a staple jam in my xerox workcentre 128?

Service manual, registration required:

https://www.scribd.com/doc/131575367/WorkCentre-123-128-133-Service-manual

http://www.copytechnet.com/forums/xerox/66901-error-041-366-document-centre-286-a.html

Try this link:
http://download.support.xerox.com/pub/docs/CC133/userdocs/any-os/en/CC-WC-WCP123-128-133_UG_en.pdf


There are also other documents that can be downloaded here:
http://www.support.xerox.com/support/workcentre-pro-123-128/documentation/enus.html

Try this link, it goes directly to the 64 bit driver download site.

http://www.support.xerox.com/support/workcentre-pro-123-128/downloads/enus.html

If that doesnt work. Go to www.xerox.com. Select support and drivers, in the search box, type 128, then go to the workcenterpro 123/128 and click on downloads and drivers.
You will find 32, 64 bit drivers for all OS.

Error 116-364 Problem with the Xerox WorkCentre Pro 123/128 Copier Finisher Staple Refills Copier. Dear i am also facing the same problem, It would be very helpful if you share the solution you may had come across. Thank you very much .

That is a software related error, You most likely need to reload the firmware, or replace the hard drive.
You can try disconnecting all the document feed and scanner cables then reseating them. Other than that, your looking at a software issue.

In menus you browse to the service tab, then serivice diagnostics. Go to NVRAM reset and perform the NVM reset.
Before you do that, print out a configuration page if you want to rememebr the network settings. It will set the IP address back to default also.