Computer Hope
Hardware => Hardware => Topic started by: Nixton on August 17, 2015, 03:21:41 PM
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Hi guys
My laptop's Vga entrance is not working and I want to connect my screen using Hdmi. The thing is that my screen only has Vga so today I bought an Hdmi to Dvi adapter and I'm connecting it to a Dvi to Vga adapter and then I'm connecting it to my Vga screen. You can see an image I attached with all this pieces.
As I connect all these together, I don't get any signal on my laptop and nothing changes. Is this supposed to work or am I doing some mistake?
[attachment deleted by admin to conserve space]
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Search Google for:
images of DVI
And find lost of things like what you might have. (attached)
[attachment deleted by admin to conserve space]
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The VGA->DVI adapter works because DVI supports analog signals. It is possible to send the same signals that are in a VGA connector over a DVI connector.
The DVI->HDMI adapter works because HDMI supports Digital DVI signalling. It is possible to send a Digital DVI signal over HDMI.
Basically, the DVI->HDMI adapter requires digital information from the DVI plug but there isn't any so you don't get any output.
If you want to get a HDMI output from a VGA source you'll need a device designed to do so. They usually consist of a powered box with the discrete logic necessary to digitize the analog VGA signal, allowing you to plug the VGA input on one side and then connect the HDMI output to your device.
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What BC describes is available from Walmart and other stores.
http://www.walmart.com/c/kp/vga-to-hdmi-converters
(http://i.walmartimages.com/i/mp/I5/7O/Kd/Vd/11/I57OKdVd11462_P704049_180X180.jpg)
About $45 and it gets power from the USB.