Monitor brightness dropping just after boot

Can anyone give me any idea on what may be causing my monitor brightness to visibly drop just after logging into windows. This does not happen every time and when it does, rebooting often 'fixes' it.

I have checked all the monitor connections at both ends.


Windows Forum Admin
Staff member
Premium Supporter
Hi kevvyb,

are all drivers latest versions? If not please update.

Open control panel and navigate to 'Appearance and customisation', 'Display' and then finally look on the left for 'Calibrate colour'. This will allow you to set the gamma ect.

Lastly, how old is the monitor?

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