Photo Gallery Slide Show doesn't works on Hdmi display set to Prim

Hello, I have an ATI Hd 2600XT, one display 1280x1024 and a 1900x1080p
display connected trough Hdmi with sound and I have tried many ways to get
Windows Photo Gallery to run the slide show on this Sharp Aquos TV but I
always get a black screen, the slide show will always works on the computer
monitor if set to Primary but never on the TV even if set to Primary, even if
restart has been done. Is there a way to get that slide show working on my
TV? Is there a plug-in, an add-on, a hidden option? I would like to know.
Thank you for help.

Best Regards
--
AyaBrea