Why is there no signal on my AOC LCD monitor connected to the DVI I port of my graphics card with a

It could be a line issue. Try it with the merchant for a different line.

DVI can transmit both analog and digital signals, while VGA can only transmit analog signals.

This is because your DVI connection monitor only accepts digital signals.

Because he provides a VGA analog signal input interface, it is not necessary for DVI to support analog signals as well).

And your graphics card belongs to the bad kind, and his DVI only provides analog signals.

It's just a simple conversion of the analog signal VGA interface to a DVI interface, which is equivalent to connecting a 5 yuan to DVI connector on the VGA).

So you find out that VGA, no problem, there is a problem with DVI.

Note: (Of course, it is also possible that your graphics card is fine, and the DVI output also outputs digital signals, but the DVI interface of the display only receives analog signals) To put it bluntly, the display or graphics card has a compatibility that is not very good.

1. Open the N-card driver, set it to copy output mode, or open the desktop display properties.

2. Take DVI-I to VGA as the main screen, and split the screen to DVI-D.

3. Switch the analog and digital signal sources on the display to see if there is an output, if there is no digital signal output, there may be a problem with the secondary display port.

If there is an output, it may be that the gforce6600 only recognizes the EDID data of the main output port, but does not recognize the EDID of the secondary port.

First of all, let's see if the graphics card of the host is a 24+5 DVI interface, if it is a 24+1 DVI interface, it cannot be converted to a VGA signal. It must be a 24+5 DVI interface. Pay attention to the device model when configuring the host.

Next, prepare a DVI to VGA adapter. Note: This adapter only supports DVI to VGA signal, not the reverse direction. And it must be a 24+5 DVI interface.

Male: 24+5DVI The number of needles is 5 needles on the right and 24 needles on the left, for a total of 24+5 needles.

Female: 15-pin VGA connector.

When the adapter is ready, connect one end of the monitor's VGA cable to the adapter, and remember to tighten both ends to form one.

Then, connect the other end of the adapter to the DVI port of the graphics card, so that the docking between the display and the graphics card is completed.

After completing the docking, open the computer, right-click [Resolution] in the desktop properties, and select the resolution suitable for the computer. This adapter is used to connect the computer host to various LCD monitors or digital TVs, etc.

Now high-end graphics cards are equipped with DVI interfaces, and friends who want to use dual monitors can use the DVI to VGA interface to achieve it.

dvi-integrated（

The DVI-I) interface (18+5 and 24+5) is compatible with the digital source word and analog BAI interface, so the socket of DUs and DVI-i has DAO jacks with 18 or 24 digital pins and 5 jacks with analog pins (that is, the four pinholes and a cross flower next to it). The 4 extra wires than DVI-D are used to be compatible with legacy VGA analog signals. Based on this structure, the DVI-I socket can be plugged into the DVI-I and DVI-D, while the DVI-D socket can only be plugged into the DVI-D.

The DVI-i compatible analog interface does not mean that the D-Sub plug, the interface for analog signals, can be connected directly to the DVI-i receptacle, it must be connected through an adapter. Generally, graphics cards with this interface will have an adapter associated with them. Due to compatibility issues, graphics cards generally use the DVI-I interface, which can be connected to a common VGA interface through an adapter.

Displays with two DVI ports generally use a DVI-I interface with an analog signal. For displays with one DVI interface and one VGA interface, the DVI interface generally uses the DVI-D type.

There is no needle in the middle18+1The line is BAI single-channel DU line,The interface 24-pin is a dual-channel connection,Use a dual-channel line to connect to no signalDAO,It may be your display interface capacity although the surface is 24+1,The inside is a single channel (cutting corners) or your graphics card output is single-pass or dual-pass,It's hard to say,In fact, the single-pass dual-pass display effect is basically the same,The supported resolution is the same,The refresh rate is different,The bandwidth is different,It will be better to use a large display for dual pass。 First determine whether your interface is single-pass or dual-pass, and whether there is a problem with the quality of your cable.

To see if there is no DVI output, you can use the extended desktop settings in the settings options of the graphics card, and then immediately select DVI on the monitor with a button operation to see if there is a display. If there is a display. I just explained that it was because the display settings were incorrect, and the situation you said appeared.

Hello lz,This kind of problem should go to adjust the monitor,There is a shortcut key on the button on the monitor,Select VGA or DVI directly,No need to restart the host,

Try lowering the resolution, many graphics cards DVI can only go up to 1280*1280 resolution.

This means that the computer does not send a signal to the monitor, and there is a problem with the computer host

1. First of all, check that the graphics card cable is plugged in the wrong place, because there are two sockets behind many cases, and the cable needs to be plugged into the graphics card socket below.

2. If you are sure that it is not plugged into the wrong socket, you need to disassemble the chassis to see if the graphics card is loose, the disassembly is very simple, you only need to unscrew two to four screws, push it, and it will be opened.

3. Press the graphics card down to try, by the way, clean the dust, if it doesn't work, take off the graphics card and reinsert it, and then fix it. (The graphics card is the one with the fan).

4. Generally, no signal input can be solved in the computer, if it is not good, it is necessary to test whether the graphics card is broken.

5. It is also possible that the memory is not in good contact or damaged, find a replacement and try it.

6. If the above operations do not work, then you need to find professional maintenance personnel.

That is, there is no signal input for the DVI interface of the display. Let's see if the cable between the monitor and the motherboard is connected. There is also whether the VGA or DVI cable is used.

Some displays have a source to select the source. If it is connected to the host from a DVI cable. See if the host is not working properly.