Using Platinum on dual monitors I had it set so that Platinum opened onto the LH screen so that the main (RH) screen is still free for me to do other stuff while it does it's thing.
 
For reasons known only to computer gremlins that change things when your pc is off to mess with your head when you switch it back on, the Platinum splash screen (the thing that displays while it is loading) has started showing up on my RH monitor (main one where windows taskbar is) and is in the way when I want to do other things. Platinum itself when loaded still opens on the LH screen where I want it to be, it's just the splash screen that I need to move from RH to LH. Anyone know how to do this?
 
 

You need to go into Windows settings by right clicking on your Desktop and choose Display Settings
Form there, set your LH monitor to be your Main Display

Thanks.
 
I thought that the main display would be the one where the windows toolbar was located and that if changed that it would move the toolbar to the left as well and also mess up the mouse tracking L-R, but it didn't, so all good now.