Question Lenovo Legion Y720 screen brightness issue

Aug 3, 2019
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Hello everyone,

Today I booted my laptop and plugged in the power cable like normal, but the screen brightness didn't go up like it normally does.
Previously without the cable, the screen brightness has been 75, and with the cable it's been 100 (actually a little brighter but you get the point). Now the brightness stays at 75 percent both without, and with the cable.
Can someone please tell me what could be causing this and how to fix this?

Edit: Restoring the power plan settings while the computer is plugged in makes the screen bright again for some reason, but when the cable is taken out the screen stays bright. Is this a problem with my battery?

Thanks,
Ace
 
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