When press Fn + UP (DOWN, Left, Right), the brightness or volume indicators aren't displayed
The above symptom may occur on the following systems:
The problem is caused by the absence of Energy Management program. In order to make the on-screen indicators work, you need to install Energy Management. For each operating system, there is a specific version of Energy management. Download from the links below:
1. Windows XP
3. Windows 7
You can also refer to the similar tip: No volume indicator appears on the screen after pressing Fn plus left arrow key
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