[REQ Help] Grayscales while saving

Hello guys, we're doing an loading screen for one system and we need a custom wallpaper-like screen. Well I'm doing it now, but the problem is this when they put it on the system pieces of it are cut out(like grayscales), but I paint it white.. And it still is cutted out, even with windows preview it's cutted out.. How can I save it so it would display all full screen w/o any cutout of white color? Thank you!

Tried saving in different formats, maybe I'm doing something wrong? (Attention to the picture).
Tried saving in JPEG... BMP...PNG..GIF... Nothing

1 Guy in the other forums just advised me to do some frames.. I putted 1px frames and it worked =).. If anyone has got this problem.. that's the sollution.