If anyone is having problems with the Optiplex 745 hanging after imaging
and not rebooting after imaging, or not rebooting out of Manual Mode, add
"reboot=b" to z_auto.cmd and z_maint.cmd (located on your ZENworks server
under SYS\tftp\cmds\). It must be added after the "vga=0x314" setting, so
the new line will look like this:

APPEND initrd=boot/initrd vga=0x314 reboot=b install=tftp://<the rest of
the line>