Brightness issue after upgrading to Windows 10 on Lenovo

[Kishore Nammi]

Hi,
I've upgraded my Lenovo P500 to Windows 10 from Windows 8, I noticed that the brightness has become very low. Could anyone help me fixing this issue?

 

[Solandri]

Microsoft added adaptive brightness to Windows 8 and 10. Most vendors disabled it in 8 (because it's annoying and the laptop vendor usually has their own auto brightness app). But if you upgraded to Windows 10, it's probably enabled again.

http://windows.wonderhowto.com/how-to/disable-adaptive-brightness-windows-10-for-maximum-screen-brightness-0163440/

 

[cottage]

Hi,
I've upgraded my Lenovo P500 to Windows 10 from Windows 8, I noticed that the brightness has become very low. Could anyone help me fixing this issue?

Microsoft added adaptive brightness to Windows 8 and 10. Most vendors disabled it in 8 (because it's annoying and the laptop vendor usually has their own auto brightness app). But if you upgraded to Windows 10, it's probably enabled again.

http://windows.wonderhowto.com/how-to/disable-adaptive-brightness-windows-10-for-maximum-screen-brightness-0163440/

Same problem with my Lenovo P500. Accidentally found the fix with a normal boot, but power adapter UNPLUGGED, while holding shift-F12 down during boot.

 

[ronpadilla]

Noticed this to be my solution...good work.

"Same problem with my Lenovo P500. Accidentally found the fix with a normal boot, but power adapter UNPLUGGED, while holding shift-F12 down during boot."

with my situation i just held the Fn+F12 instead. which reminded me how I got here to begin with....I use this laptop to test any kind of operating system I can get my hands on and twinkle with the F12 from time to time...and as I saw this comment I knew that was my problem.
Thank You