When the monitor is not powered on, the DVI port is live

This situation is normal, and the key is that your home outlet does not have a ground wire. General display, computer host, etc. use a switching power supply, the phase line and the neutral line of the switching power supply are connected with the shell (ground) with a small capacity of capacitor, if the user power supply is not connected, then the phase wire of the monitor and the computer host will pass through these small capacitors and there is a voltage difference, usually with a voltage tester can measure the phenomenon of electricity, there will be a feeling of electric shock when touched by hand, but this feeling will soon disappear, will not have an impact on the human body. If it's a strong feeling of electric shock, it's time to check the monitor.

In the countryside, if the power supply is not connected to the ground wire, then get it yourself, find a longer metal or bury a thicker wire in the ground of the window, and connect it to the wall socket. In the old house in the city is not connected to the ground wire, then find a wire to connect to the metal water pipe (not recommended), if the new house does not have a ground wire, then look for the theory of decoration (no ground wire is unqualified).

This problem is that there is a problem with the power cable of your monitor, and there is also a problem with the socket you use, and the disconnection is not completely disconnected, you can change the power cord and socket, remember to buy a better socket, don't go to the computer to buy those 10-20 yuan goods.

The 14 pins of the DVI interface are +5V. This voltage is provided by the graphics card or motherboard.

Causes: 1. The monitor does not switch signal input.

2. The wire is damaged and aging.

3. Poor interface contact.

Solution: 1. Check whether the monitor has switched signal sources.

2. Check whether the wire is damaged and replace the wire.

3. Check whether there is poor contact at the interface, and replace the interface in time.

Summary. It could be due to the following reasons:

1. The display does not switch signal input.

2. The wire is damaged and aging.

3. Poor interface contact.

The computer plugged in the HDMI cable monitor does not light up, DVI can be, why?

There may be the following reasons: 1. The monitor does not switch the signal input. 2. The wire is damaged and aging. 3. Poor interface contact.

Solution: 1. Check whether the monitor has switched signal sources. 2. Check whether the wire is damaged and replace the wire. 3. Check whether there is poor contact at the interface, and replace the interface in time.

Cause:

1. The display does not switch signal input.

2. The wire is damaged and aging.

3. Poor interface contact.

Solution: 1. Check whether the monitor has switched signal sources.

2. Check whether the wire is damaged and replace the wire.

3. Check whether there is poor contact at the interface, and replace the interface in time.

Switch the mode to HDMI on the monitor and you're good to go.

HDMI is for you to connect your computer to your TV and your computer.

After my mother's display is broken, the LCD TV sometimes becomes my display.

Is it solved? What's the reason, I'm in this situation too.

First rule out the host problem, take a good monitor to connect, the display is on is your display problem, disassemble and measure 300V high voltage is abnormal, not normal, please replace the fuse, check the starting resistance and the like, such as normal check 12V, and 5V voltage is abnormal, and then check the driver board voltage is abnormal, check the key board power key is not normal, basically these.

It may be that the cables in the body are falling off.

It can also cause this phenomenon to see if the transformer on the computer board is working properly.

Test method: Use a universal meter to measure whether the output and input voltage of the transformer are normal.

method of processing; If there is an abnormality, replace the transformer.

The last possibility is to replace the computer board when it is malfunctioning.

What display? Old-fashioned big heads, or LCD?

You don't need to fix the big head, there's no need!

If it's a liquid crystal, it can be repaired, and the picture tube is fine, it's just a problem with the internal power supply.

Less than 100 is done.

A problem can be caused by a variety of reasons:

1: Check whether the data cable and power cord of the monitor are in good contact, whether the data cable of the monitor is tightened and connected, and you can unplug the data cable of the monitor to see if there are broken needles and curved pins.

2: If there is no problem with the first point of inspection, it means that there is a problem with the internal circuit of the display, and it can be displayed normally that it is not a problem with the lamp or panel, to see if there is a problem with the internal switching power supply line, and the contact is not good.

3: You can also remove the host to clean up the dust inside, unplug the graphics card to see if there are signs of oxidation, you can use an eraser to erase it. Install it and reboot it to see.

Hope it helps.

The monitor power supply is in poor contact.

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 screw both ends tightly to form one.

Next, 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.