How do you unlock dell monitor when it is lock?

when i try to ajust the monitor useing the three bottons on the front a lock come on the eyeshade
'

Answer:
You will need the password to evolution the setting.
try to brrow a bigger monitor....then in a minute you can open the computer...money the resolution of the graphics card...the resolution will depend on the size of computer...(try not to use a resolution that your monitor cant handle...)try to lower your resolution...consequently after it connect your monitor again...

if you cant borrow a monitor... reformat your pc
Do you be a sign of the controls on the screen are locked (brightness, contrast, horizontal & vertical settings, etc?)

I have this problem once - all you stipulation to do to unlock the controls is press and hold the Menu button for about 10-15 second. That should unlock all of the controls.

It took me days of hunting through Dells website to find this when it happen to me!

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