I going to guess Aero is not enabled. Let's try something really safe.
Let's hope it's that.
Just recently, my desktop theme will not display correctly. The wallpaper is locked on 1 image instead of a slideshow. When I try to manually advance to the next image, nothing. I did try to save a solid background, which it let me do but when I tried to go back to my wallpaper, it would not let me display. Also, Windows will not let me create or even save my unsaved theme. I have used system restore to get a background image back but I am unable to change or save any settings in regards to desktop themes. My computer IQ is slightly newbish so any help is appreciated.
Model- Asus CG 1330
Processor- AMD Phenom II X6 1045T
Graphics- ATI Radeon HD 5400 Series
RAM -8 GB
OS-Windows 7 Home Premium 64-bit
Thanks in adavance for any help you may have.