How to solve the problem that the brightness control option disappears in Win7

Appropriate brightness adjustment can protect the computer, but a friend found that the brightness adjustment in his Win7 computer is missing. So what should I do if the brightness adjustment in Win7 is missing? The editor below will give you a detailed introduction to the solution to the problem that Win7 brightness adjustment is missing. Friends in need can come and take a look.

1. Open the "win R" shortcut key and enter "regedit", press Enter to enter the registry editor, click "HKEY_LOCAL_MACHINESYSTEMControlSet001ControlClass{4d36e968-e325-11ce-bfc1-08002be10318}" on the left, and click Among them, the "0000" file.

2. Find the "KMD_EnableBrightnessInterface2" item on the right, right-click and select "Modify". If not, right-click on the blank space on the right and select "New" "DWORD value", name it "KMD_EnableBrightnessInterface2".

3. Finally, change the "numeric data" to "0" in the window and click OK to save.

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