cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
MrsG
What's DOS?
Posts: 1
Registered: ‎06-06-2014
Location: CA
Views: 2,937
Message 21 of 33

Re: P400 Touch screen brightness won't adjust

This just happened to me. Thank you so much for posting the fix 😊
ghani
What's DOS?
Posts: 1
Registered: ‎11-21-2014
Location: texas
Views: 2,541
Message 22 of 33

Re: P400 Touch screen brightness won't adjust

hitting brightness button increases brigthness but not completely..updating drivers helped me..thank you so much

cflanaga01
Paper Tape
Posts: 2
Registered: ‎02-24-2015
Location: usa
Views: 2,295
Message 23 of 33

Re: P400 Touch screen brightness won't adjust

Says latest vga driver is incompatible with windows 8.1
mrcarranza
What's DOS?
Posts: 1
Registered: ‎05-21-2015
Location: San Francisco
Views: 2,159
Message 24 of 33

Re: P400 Touch screen brightness won't adjust

This also helped in my case, but I received a message saying that there is a newer driver version already and if I wanted to override this- I said yes. I'm not really happy with the Lenovo product and will go back to HP

FixedBrightness
What's DOS?
Posts: 1
Registered: ‎10-02-2015
Location: Cincinnati
Views: 1,887
Message 25 of 33

Re: P400 Touch screen brightness won't adjust

This is the greatest trick. I adjusted the brightness when "LENOVO" was shining on the screen during restart and it worked. Though the brightness control is not working, it helped me gain the brightness back. 

Thank you very much.

 

Harshad

Lenovo42
What's DOS?
Posts: 1
Registered: ‎11-10-2015
Location: Portland, OR
Views: 1,805
Message 26 of 33

Re: P400 Touch screen brightness won't adjust

I just used this patch to fix my P400 Touch and it worked on the screen brightness adjustment being restored and I am using Windows10. Even though the patch reads for Windows8, it worked perfectly for me.

Thank you so much, I was about to throw my computer until I found this forum!

 

Smiley LOL

Highlighted
dappadave
What's DOS?
Posts: 1
Registered: ‎11-29-2015
Location: United States
Views: 1,754
Message 27 of 33

Re: P400 Touch screen brightness won't adjust


@y2k4life wrote:

This happened to me and I almost went to K-Mart to ship my pants.

 

There is a key combination that will make the screen go dim. I was in Internet Explorer and was using the CTRL + and - to adjust the zoom and CTRL 0 to return to normal. I think I hit some key combination and the screen went dim to almost dark. I can't reproduce the problem.

 

It took me a day and a half to figure out a solution without having to update software.

 

Here is a solution in case the drivers and/or the OS gets in the way again of adjusting the brightness. It is a pain and requires a reboot which removes the buggy software interfering with the brightness keys which allows you to make it brighter. I had to do it a couple of times due to hitting the key at the right time. Maybe going into BIOS would give you more time. I did not try that.

 

What I did was reboot and when I saw the Lenovo logo on boot up I hit the brightness key and watched the screen get brighter. When I saw that I almost had to go back to K-Mart because I could not believe how easy that was.

 

I still don't have brightness control, but I'm no longer having to squint my eyes to look at the screen or work in the dark. I'm going to get the drivers to see if that will fix the keys.


YOU ARE A HERO AMONG MEN

rtaylor380
Paper Tape
Posts: 3
Registered: ‎11-12-2015
Location: Barnsley
Views: 1,742
Message 28 of 33

Re: P400 Touch screen brightness won't adjust

That has just worked for me, many,man thanks.

p400
Paper Tape
Posts: 1
Registered: ‎02-11-2016
Location: usa
Views: 1,611
Message 29 of 33

Re: P400 Touch screen brightness won't adjust

thank you my touch screen is now normal can;t say thank you for this community

 

yamexchemoriya
What's DOS?
Posts: 1
Registered: ‎07-25-2016
Location: US
Views: 1,323
Message 30 of 33

Re: P400 Touch screen brightness won't adjust

Thanks, this makes life much easier. Reverting to use old versions of drivers works fine but I guess they still keep pushing the buggy update. 

Check out current deals!


Shop current deals

Top Kudoed Authors