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black screen

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by bigdave426101

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i just recently tried hooking up another dell moniter to mydimensionc521 it will come on for a second or two then goes black.if im fast enough i can hit the menu button on the moniter but a locked padlock shows up in a blue square then boom screen goes black whats the problem????? please help.the other moniters i have all work well with this tower??

5 replies

by normh3

The monitor and video card may be incompatible with the resolution that you have currently set on the pc. Is the new monitor the same as the functional one?

by bigdave426101

no there different styles of dell the one im having trouble with is a flat screen.also on the back of the moniter theres a slot with a lock symbol beside it.also if im fast enough and can hit the menu button a lock shows up. then the screen goes black

by wmiller

The Lock Symbol on the back with a slot is for a kensington Anti-Theft Cable.

To deactivate the OSD Lock , Do this:
Press one of the arrow buttons beneath the contrast () symbol. The OSD will appear.
Use the left arrow button to select Unlock mode ().
Note: OSD closes 30 seconds after you release a button or immediately if you press the option button ().

All in the OSD check the signal frequency it should match whatever is indicated in the computers Display settings.

Wes

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