WHY can't I up or down the brightness of my laptop's screen?

thediegyx

Estimable
Aug 12, 2015
15
0
4,560
0
My laptop is a lenovo z50-75.
When I try to up or down the brightness the screen stays with the same brightness.
I try to upgrade the drivers of my graphics but it says they're with the most recent driver.
I go to control panel and there, there is a "brigtness bar" and there I can up or down the brightness but in real world doesn´'t up or down the brightness.(IT happens the same with the keys of brightness of my keybord)

So, what can i do?
 

PlzDuntCensorME

Estimable
Oct 12, 2015
11
0
4,570
1
Is it on Power-saving mode? If yes, then try putting it to balanced or high-performance mode and try adjusting.

Source: My laptop does the same when it is in power-saving mode.
 

thediegyx

Estimable
Aug 12, 2015
15
0
4,560
0

No, It's in balances mode

 

Ezoz

Estimable
Apr 10, 2014
3
0
4,510
0
Are you're power-supply connected whilst trying to adjust? Sometimes they lock brightness-adjusting while on battery.
 

Ezoz

Estimable
Apr 10, 2014
3
0
4,510
0


Great you found a solution! :)

Vendor specific driver?, normally Windows gets those drivers from Windows update on first install. If it where a quick launch button driver problem you still vould have been able to adjust from control panel - power options.

Good to know the problem and solution.
 

NaNaNa1212

Commendable
Apr 2, 2016
1
0
1,510
0


Wait, what was your solution? Because I have the exact same problem
 

thediegyx

Estimable
Aug 12, 2015
15
0
4,560
0

1080p
 
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