My computer monitor just won t turn on. Please solve the heroes!!

First of all, you have to confirm whether it is a problem with the monitor,You can borrow a monitor,If it is a problem with the display,You see if your data transmission line is intact,No signal input,I guess your monitor is no problem,Maybe there is no data transmission on the host side at all,You change a parallel port cable to see,If it is changed, it still doesn't work,Then you see if the short port of your host and the display is fine,Anyway, the first thing you have to do is to confirm what device the problem is,In order to solve the problem,Thank you!

Hardware problems, it should be that the interface between the display and the graphics card is loose!

When the boot ** sounds, it means that the other hardware is running normally and the system is running normally.

This situation is basically a graphics card failure. Replug and unplug the graphics card interface and the graphics card motherboard slot, if you can't find the graphics card after-sales service, the graphics card may be broken.

Please check that there are more false welds or breakdowns in the display tube.

What brand of monitor?

Your situation is most likely due to the following:

1.The power supply is insufficient.

2.The graphics card is not in good contact with the motherboard (only if your machine is a discrete graphics card, not an integrated graphics card).

Solution: For 1, you can choose to repair the power supply (about twenty or thirty yuan, but it is easy to fail again); buy an old power supply (probably a few dozens); Buy a new power supply (because the power supply has a great impact on the computer, so if you add silver, you should buy a better power supply, which is beneficial to the machine).

For 2, you can remove the graphics card, carefully wipe the gold finger and then reinsert it into the machine, taking care that the screws are properly tightened.

Specific implementation steps:

After turning off the power switch of the computer, first unplug the hard disk, optical drive and power supply, then remove the graphics card and memory module, wipe the gold finger and reinstall it, then check whether the monitor plug and the graphics card are plugged in tightly, then remove the battery on the motherboard, put it back on the motherboard after about half a minute, and finally turn on the power switch.

If the monitor is working properly at this time, turn off the power again, connect the hard disk and optical drive to the power supply, and then turn the power back on. If the machine is working properly, then it may be that your memory module or graphics card is not plugged in tightly, if the machine does not work, then the power supply is insufficient, and you can only change the power supply.

If the monitor still does not display the image at this time, but the case starts normally, then it is estimated that there is a problem with your graphics card, which is a hard fault, and you can only replace the graphics card or find someone to repair it.

There is a problem with the connection port of the graphics card.

Take it for repairs. Most of them are caused by moisture and aging...