HI,

since 2/3 days an unusual problem appeared on my alienware 17 r4.

on alien FX the led strip number is the #9 fyi.

The problem is located on the left inferior side led strip ( the one at the left of the keyboard not the one on the monitor),

The problem basically is in the brightness of that led strip  : it's lower than the others. 

When i right click on the alien Fx head and i switch the brigthness of the leds everything change but the "corrupted" led is still lower comparing to the others, the brightness change but the maxium brightness of that led equals the minimum brightness of the others so there is a "gap" between this led and the other 3.

even the keyboard and the touchpad leds are more brighter than that mentioned left side led stip.

I tried to update bios but nothing.

I tried to change colours through Alien Fx but nothing the problem is still there. the led responds to colour changes but it seems that the maximum brightness value of that strip is corrupted and causes a gap of brightness comparing to his "twin" located on the monitor.

I don't know how to fix this annoying problem

Please help me 

Thanks