Dell screen not working properly

blair

New member
Hi

Fished out the old dell screen for bros new pc and the screen wont turn on when the pc is turned on you have to hold the power button to get it to come on and then it will flicker every time you plug something in via USB.

When powering down the pc the screen wont go into power save mode but instead does the self test with the different colours on the screen and again the power button has to be held down to turn it off, it never did this before please help.
 
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