M128 Workcentre Shows 'Download Mode' on screen

SOURCE: Xerox WorkCentre M128 - 016 - 782

There is an error in the in the server password or a template setting.
Here is the documentation. Pretty straight forward

Login to the Server was not possible during Scan to Server file transfer.
Initial Action Refer to BSD 16.1.
Power OFF/ON
Procedure Set the login name and password in the destination server.
Set the attributes of the Job Template file correctly.
From a client PC, set the same account as the above as a resource using CW.

SOURCE: error 016-311

This error code means the Scanner is not installed. The reason for this code could be a bad or diconnected interface cable, or corrupt system software. Check the cables for connectivity. If the problem persists, it will probably require a call to Xerox service. 800-821-2797

SOURCE: Problem connecting Win 7 64-bit

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.