The computer has a new motherboard, the host can be started, but the display is not lit up?

1. The monitor is not connected to the power supply;

2. The power of the monitor is turned on, but the computer host is not turned on normally;

3. The direct signal line between the monitor and the computer host is not properly connected, or the signal cable is faulty.

Step 1: Check whether the power supply of the monitor is not connected. If plugged in, the display's power indicator will light up when the monitor power switch is turned on.

When there is a signal, it will glow green, and when there is no signal, it will glow orange. Check the connection of the signal transmission line or the fault of the line.

Step 2: Check whether the signal transmission cable between the computer and the monitor is properly connected. If it is connected correctly and the monitor still does not light up, we recommend that you change a signal cable and try again, if it still does not light up, then it is not the cause of the cable.

Step 3: Check whether the power supply of the host computer is turned on. If the power of the computer is turned on, and the monitor screen still does not light up after pressing the power button, then you should check whether the hardware of the computer is turned on.

First of all, you should check whether the fan of the host computer is rotating, if the fan does not rotate, then there is a problem with the power supply part of the host. If all the fans are turning, then you should check that the memory is installed correctly.

Your new machine comes with or without a discrete graphics card.

It's possible that your new machine is equipped with a discrete graphics card, and then you think that there is no monitor, when it is connected to the graphics card interface integrated into the motherboard, if this is not the case, then there may be a problem with the motherboard (or graphics card, if there is a discrete graphics card), and ask the merchant to replace the motherboard for you in 15 days.

520 The power consumption of the graphics card is not very high, unless your power supply is a miscellaneous brand or your voltage is unstable, it may not light up, you say that it can be lit with someone else's graphics card, it may be your graphics card problem, you change your graphics card to another machine, try.

The discharge you are talking about, generally you don't go into the coms to change things, and generally don't need to discharge.

That may be a problem with the data cable, try a different cable, a 24-inch monitor, a cable that is too bad will not move.

Here's how to fix it:1. If your computer has a black screen.

Later, the light of the display is not on, but the light of the main chassis is still on, at this time, consider that the power plug of the display is not plugged in properly, or it has been loosened, just plug the plug back in.

2. If the light of the display is on, and the main chassis is also on, you have to consider another problem at this time, that is, it is possible that the transmission line is loose or broken, so try to replace it with a new one at this time.

3. The black screen of the desktop computer boot may not only be a problem with the power supply or plug, but also the graphics card of the computer host is loose, in this case, you need to open the computer case, get the graphics card down and wipe it, and then install it to try to see if it works.

Reasons for the black screen of the computer on boot:3. There is a problem with the memory, or it is a poor contact.

4. There is static electricity on the motherboard, resulting in no response.

5. The discrete graphics card has poor contact or problems.

6. The motherboard is broken, or there is a problem.

Summary. Dear, I'm glad to answer for you, if the host can enter normally, it means that there is no problem with the computer, so check the data connection cable first, if you feel that the line is loose, tighten it tightly, if you have the conditions, you can try to change a wire for testing, and there is a problem with the memory module and the motherboard battery, generally loosening will lead to insufficient power supply to the graphics card, so the display will not light up, so you can disassemble the host to deduct the battery, put it for a few minutes and then install.

Dear, I'm glad to answer for you, if the host can enter normally, it means that there is no problem with the computer, so check the data connection cable first, if you feel that the line is loose, tighten it tightly, if you have the conditions, you can try to change a wire for testing, and there is a problem with the memory module and the motherboard battery, generally loosening will lead to insufficient power supply to the graphics card, so the display will not light up, so you can disassemble the host to deduct the battery, put it for a few minutes and then install.

The main unit is on, but the display is not on.

Dear, what you check is whether the connection is normal, it is likely that the line connecting the screen is loose, if it is indeed a poor contact, as long as you find the cable connecting the screen and plug it in.

The computer is a modern electronic computer used for high-speed calculation, which can perform numerical calculations, logical calculations, and also have the function of storage and memory. It is a modern intelligent electronic device that can operate according to the program and process massive amounts of data automatically and at high speed. The machine used by the computer to read and write the contents of optical discs is also a common part of desktop and notebook portable computers.

With the more and more widely used in multi-**, optical drives have become standard in many computer accessories. Optical drives can be divided into CD-ROM drives.

The console keeps flashing red light.

Dear, is the main line loose?

No, and the display doesn't light up all the time.

The display screen has not been lit up is a problem with the line.

Still not lit. Dear, it's a matter of the line, you can change it again.

If we turn on the console, but the computer display doesn't light upThen here are a few things you can try

1. First plug in the power supply to see if the power supply of the computer is normal, if the power button is not lit, you should consider whether you should change the power supply.

2. Check whether the signal cable from the host to the display is connected normally, if the signal cable is not in contact, it may be a problem with the host motherboard.

3. Disassemble the case, take down the memory module, and then wipe the ash on the memory module in the east and west wipe the hole hall, put it back in place, turn it on again, and try whether the computer display can light up.