How do I adjust brightness on my acer 5570Z My sreen is extremly dim. I can barley see it. Use the special function keys to adjust screen and speakers: + <→> = brighter + ...
acertravelmate4000 got it used,don,t know how to turn off mute,turn on or up volume The volume may be muted. In Windows, look at the volume control (speaker) icon on the taskbar. If it is crossed-out,
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