I have a windows 8.1 machine and I want to open a program with minimized window. For a program like notepad, I just use the following command:
start /min \"\
Try:
start "" "C:\Program Files (x86)\Microsoft Office\Office12\WINWORD.EXE" --new-window/min
I had the same problem, but I was trying to open chrome.exe maximized. If I put the /min anywhere else in the command line, like before or after the empty title, it was ignored.
/min