Windows 7 Aero theme when on battery

This is how I got it working.

1. Change the power profile to "Power Saver" (How to: Right click on the battery icon on the desktop > select "Power options" > Select "Power Saver")

2. Unplug the charger and then go to "Personalize" (right click on the desktop select "Personalize ")

3. Click windows color > switch OFF "Enable Transparency"

4. Save changes and exit "Personalize"

5. Plug in the charger and then go to "Personalize" (right click on the desktop select "Personalize")

6. Click windows color > switch ON "Enable Transparency"

7. Save changes and exit "Personalize"

I think this should solve your problem.

Check the power management settings. It should be in the advanced settings.

Not at a laptop at the moment, but Power Options > Change Advanced Settings

You may need to click on the link to 'view options not visible' (or something to that effect)