How to prevent app from opening on a monitor that isn't in use(powered down)?

Copied these from other answers around the web and compiled them here for your easy of access (added things to ease readability):

1. Open the application.
2. Re-size the window so that it is not maximized or minimized.
3. Move the window to the monitor you want it to open on by default.
4. Close the application. Do not re-size prior to closing.
5. Open the application. It should open on the monitor you just moved it to and closed it on.
6. Maximize the window.

The reason why this works is two fold.

Correctly written Windows apps that want to save their location from run to run will save the results of GetWindowPlacement() before shutting down, then use SetWindowPlacement() on startup to restore their position.

Frequently, apps will store the results of GetWindowPlacement() in the registry as a REG_BINARY for easy use.

The WINDOWPLACEMENTroute has many advantages over other methods:

Handles the case where the screen resolution changed since the last run: SetWindowPlacement() will automatically ensure that the window is not entirely offscreen Saves the state (minimized/maximized) but also saves the restored (normal) size and position Handles desktop metrics correctly, compensating for the taskbar position, etc. (i.e. uses "workspace coordinates" instead of "screen coordinates" -- techniques that rely on saving screen coordinates may suffer from the "walking windows" problem where a window will always appear a little lower each time if the user has a toolbar at the top of the screen). Finally, programs that handle window restoration properly will take into account the nCmdShow parameter passed in from the shell. This parameter is set in the shortcut that launches the application (Normal, Minimized, Maximize):

if(nCmdShow != SW_SHOWNORMAL)
    placement.showCmd = nCmdShow; //allow shortcut to override

For non-Win32 applications, it's important to be sure that the method you're using to save/restore window position eventually uses the same underlying call, otherwise (like Java Swing's setBounds()/getBounds() problem) you'll end up writing a lot of extra code to re-implement functionality that's already there in the WINDOWPLACEMENT functions.

Alternatively you can use other applications such as: http://realtimesoft.com/ultramon/

Or simply shifting the application from monitor to monitor using:the Shift + Win + [left,right] arrow keys shortcut. You can move the currently active window to another monitor with it.

I hope these answers are of some use to you.

References: How to make applications open on the correct monitor when using multiple monitors? https://stackoverflow.com/questions/52755/what-determines-the-monitor-my-app-runs-on http://www.tenforums.com/general-support/14348-forcing-program-open-second-monitor-rather-than-main.html