Missing Brightness Slider in Windows

Windows brightness slider is missing after graphics driver update.

1. Update the graphics driver to the latest version (try using the latest graphics driver from Intel and your device's manufacturer).
2. Perform a Clean manual Installation of the graphics driver (try using the latest graphics driver from Intel and your device's manufacturer).
3. Complete all necessary Windows update.
4. Repair System files:
   1. Open the Search menu, type Command Prompt and select Run as administrator.
   2. Type chkdsk then press Enter
   3. Type prompt then press Enter
   4. Now, paste the following two commands and then hit Enter after each to scan and fix issues with the ieframe.dll file:
      • sfc /scanfile=c:\windows\system32\ieframe.dll
      • sfc /verifyfile=c:\windows\system32\ieframe.dll
   5. Type assoc then press Enter.
   6. Type sfc /scannow then press Enter.
      • Note: The above scans will identify problems with the ieframe.dll file and the other corrupt system files and replace them with their cached copy. After running the scans, check if the brightness slider is now working.
5. If the issue persists, contact your device manufacturer for further support.