SOURCE: Can't see screen to install diver for HP Compaq WF 1907
My friend just purchase this monitor yesterday. When she plugged it in to the back of the tower she received the same prompt u have mentioned. I was able to repair it because she simply did not realize that I had installed a new graphics card into her pc a few months ago. When u do this, you have to hook your monitor into the area where the new graphics card was installed. You can not plug your monitor into the same onboard card that u have previously plugged your monitor into.
Let me know, if by chance, u did install a new graphics card.
Hope this was helpful :)
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Good sign. Means the LCD monitor is working. Bad sign. Means the video signal from the computer isn't getting to the monitor. Start by using a known to be good monitor cable in place of the one you're using now. Borrow one from another computer setup for a test, or use the old monitor, and it's cable, if the monitor is good. Same thing? Problem with the computer. One of the largest causes of computer failure is a bad Power Supply. Second cause is the computer is dirty inside, as well as the Power Supply. Wish to know more? Please post the computer manufacturer's name, and Model Number. Back of a desktop computer tower next to the Windows product key, or up on the side of the computer tower.
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