Layout shrinks to top left of screen

When Leaving default layout on overnight i am finding that every morning it has moved to the top left of the screen.

The only way to fix this is terminate the application and reopen or reboot the PC

Layout orientation is portrait
IE rendering mode
CMS version 1.7.3
Player Version 1.7.3 on Windows 7

Does the screen/PC go in to power saving or similar overnight? Or reboot automatically or similar.

The player if set to use Full Screen will use the screen dimensions it gets at startup. Sometimes if a machine reboots or hibernates then the screen size we see changes.

You could try fixing the size/position of the Player with a Display Settings Profile for that Player.