after installing the windows 10, the screen became too bright, before upgraded to windows 10, the windows 7 is perfect.
solution:(might not working for yours)
- Tap on the Windows-key, type regedit and PRESS enter.
- Use the left folder structure to navigate to HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\ Themes\Personalize
- Right-click on Personalize and select New > Dword (32-bit value) from the context menu.
- Name it SystemUsesLightTheme and make sure it is set to 0.
- Restart the PC.