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hpeti2
Paper Tape
Posts: 10
Registered: ‎11-24-2012
Location: Budapest
Views: 43,782
Message 1 of 83

Ideapad z500 brightness can't increase

I have a new z500 that I've downgraded to Windows 7 64bit. For the most part I have everything working. I accidentally hit the brightness + (yes, +) and it instantly dimmed the screen to where it is barely viewable. It seems that hitting that one key decreased the brightness to the minimum amount. I've rebooted, looked for a setting in the BIOS, hit the Brightness +/- and can't increase the brightness. It is interesting because the other hot keys work correctly. I've even upped the brightness in the Control Panel, but nothing seems to work. The screen is extremely dim whenever the machine is powered on (including the BIOS), not just in Windows. I tried a lot of intel chipset drivers, the available Intel HD 4000 drivers in Win8 and win7 too, but nothing working.

 

Can someone please help with how to up the brightness? 

hpeti2
Paper Tape
Posts: 10
Registered: ‎11-24-2012
Location: Budapest
Views: 43,621
Message 2 of 83

Re: Ideapad z500 brightness can't increase

Intel i5-3210m with HD 4000

nVidia geforce GT 635m 2GB

Intel HM77 chipset

8 GB RAM

 

ishaan
Bit Torrent
Posts: 3,304
Registered: ‎06-27-2012
Location: India
Views: 43,603
Message 3 of 83

Re: Ideapad z500 brightness can't increase

Please download install the following again
Lenovo energy management and
Intel hd graphics driver from intel site
Ishaan Ideapad Y560(i3 330m), Hp Elitebook 8460p!(i5-2520M) Hp Pavilion n208tx(i5-4200u)
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hpeti2
Paper Tape
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Registered: ‎11-24-2012
Location: Budapest
Views: 43,579
Message 4 of 83

Re: Ideapad z500 brightness can't increase

I installed both of them, but the "brightness +" button doesn't work.

ishaan
Bit Torrent
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Message 5 of 83

Re: Ideapad z500 brightness can't increase

Try using it without win 7.
Ishaan Ideapad Y560(i3 330m), Hp Elitebook 8460p!(i5-2520M) Hp Pavilion n208tx(i5-4200u)
If you think a post helped you, then you can give Kudos to the post by pressing the Star on the left of the post. If you think a post solved your problem, then mark it as a solution so that others having the same problem can refer to it.
hpeti2
Paper Tape
Posts: 10
Registered: ‎11-24-2012
Location: Budapest
Views: 43,560
Message 6 of 83

Re: Ideapad z500 brightness can't increase

I tried in BIOS and when windows is booting, but nothing happens. Smiley Sad

 

ishaan
Bit Torrent
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Message 7 of 83

Re: Ideapad z500 brightness can't increase

Sorry, but i meant you use energy mangement of windows 7.
Ishaan Ideapad Y560(i3 330m), Hp Elitebook 8460p!(i5-2520M) Hp Pavilion n208tx(i5-4200u)
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hpeti2
Paper Tape
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Location: Budapest
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Message 8 of 83

Re: Ideapad z500 brightness can't increase

I tried to increase brightness with and without Lenovo Energy Management in Win7 and in BIOS, but  nothing changed. Smiley Frustrated

ishaan
Bit Torrent
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Message 9 of 83

Re: Ideapad z500 brightness can't increase

Are you able to use the hotkeys? It might be that lenovo energy maagement has taken that reponsilbility to themselves.
Ishaan Ideapad Y560(i3 330m), Hp Elitebook 8460p!(i5-2520M) Hp Pavilion n208tx(i5-4200u)
If you think a post helped you, then you can give Kudos to the post by pressing the Star on the left of the post. If you think a post solved your problem, then mark it as a solution so that others having the same problem can refer to it.
hpeti2
Paper Tape
Posts: 10
Registered: ‎11-24-2012
Location: Budapest
Views: 43,505
Message 10 of 83

Re: Ideapad z500 brightness can't increase

The other hotkeys are working (mute, volume +, volume -, display on/off etc.). In the control panel i can change brightness, but actually has no effect (i tried it after that lenovo energy management uninstalled).

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