Windows 8 was made to compete with the changing technological evolution. Many gamers dislike this change.
You alter the brightness of a bulb by changing the voltage or frequency that is applied to the bulb.
The F1 key brings up the help function under the dos and the windows operating system,
Your screen might not support brightness. If you are on a desktop PC or using a monitor try the buttons on the front to alter screen brightness
There is no Windows 8.
Windows 8 is commercial. You need to by a Windows 8 book.
There isn't any Windows 7.8, but if you were referring to Windows Phone 7.8, it cannot be updated to Windows Phone 8 (note that I did not say Windows 8 because Windows 8 is for laptops, desktops and some tablets).
Windows 8 is not released yet.....
As of 2013 the catalog of Windows 8 phone apps has not been made available on the Windows 8 OS.
You can update to Windows 8 by purchasing a Windows 8 installation disk but make sure your hardware can support the update.
Windows 8 belongs to the Windows Operating System category.
i think it the full version for windows 8 or its a trial version for windows 8, if not full version.