Windows 10 cannot adjust brightness

T

tovicheung

I'm using Windows 10 and I can't adjust the brightness of my screen and it's very bright now. I've tried everything online but still it won't work. Originally I can just press F11/F12 to adjust the brightness, but now it doesn't work. Fn+F11/12 doesn't work too.The scrollbar at Settings>System>Display is missing. According to Device Manager, my only display adapter is Microsoft Basic Display Adapter, which is already up to date, Generic PnP Monitor is also up to date.In Settings>Update & Security>Windows Update, it shows there is a update "Intel Corporation - Display - 26.20.10

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