Why is my screen darker than normal

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Hi,

I have a Lg moniter and last week i turned on my computer and i found out it is much darker than normal?

I haven’t changed the settings.

I don’t know why it got darker.Is there a way to fix this?

Any idea?

Please help.

Thanks!

I didn't find the right solution from the Internet.

References ccm.net/forum/affich-1016737-why-is-my-screen-darker-than-normal

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