I recently did a fresh install of Window 7 Ultimate (64-bit). My computer will not dim. The controls were not working at first (F4/F5 would bring the brightness down one notch, but that is it). I updated the BIOS to 12 and the F4/F5 controls now work, but the monitor brightness does not change. I cannot dim my monitor at all and it is draining the battery. I have the "power saver" option selected and even when I unplug the A/C adapter the monitor still stays on max brightness. Any suggestions? Much thanks.
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