The computer boot display doesn t light up.,It s more of an evil kind.

Sometimes there is such a problem on the computer, my graphics card has a similar situation, I conclude that it is because the graphics card is not plugged in properly, or the power supply system is aging, or the hard disk cable is not plugged in properly. Or you leave it for two days and don't use it, and it will be fine after two days.

It's such an evil door.,Sometimes the machine can't be lit.,The reason is that the motherboard positioning post in the chassis is not screwed properly.,It's no problem to screw it twice.。

In your current situation, changing the card or replacing other hardware may solve your problem, it is best to find a place where you save the computer and let them help you check it, that is, replace your current hardware with other hardware to see what part of the computer can work normally. It's a bit stupid, it works.

I think it's a problem with the motherboard biso.。。。

Because the computer boot is first detected by the motherboard of each hardware information, and then load the hard disk, through the boot into the system... Your problem is when you first boot up.,It has a lot to do with the motherboard.。。。 But your computer can be used again.,I think it may be a motherboard BIOS problem (motherboard BIOS control motherboard),The solution is,You go to the rainbow**to**flash motherboard BIOS program,Now it's automatically brushed under the system.,It's very convenient.。。

I've encountered such a problem with you before.,It's just that I'm repeatedly turning on and off.,And then it doesn't respond.,Occasionally you can start it.,When I enter the system and flash the motherboard BIOS, it's fine.。。。 You can try.

That means replacing your current hardware with something else and seeing what exactly you replace, and the computer works. It's a bit stupid, it works.

If the power supply is insufficient, change the power supply.

You try upgrading the graphics card and motherboard BIOS.

The 3500 can be equipped with a table for 3 ticks.

It's really frustrating you.

1. The display screen is black:

A black screen is a common problem that we encounter in the boot of our computer, and the black screen is usually caused by the following reasons:

1. See if the power of the monitor is turned on, if it is turned on, please check whether the power cord of the monitor is connected in good condition. Remember, if you don't power on the monitor first, it will create the illusion of a black screen, so don't forget it.

2. If the power of the display has been turned on, the display of the power light of the display is normal, but the screen is not displayed, the reason may be that the brightness or contrast adjustment ratio of the display is not appropriate, and it is not excluded that the hardware failure of the graphics card or the poor contact between the signal cable of the display and the interface of the graphics card cannot be ruled out.

2. The computer cannot be started

After the computer is turned on, the power indicator of the monitor works normally, and the computer can be powered on but cannot be turned on. To solve the problem that the computer cannot be started, it is recommended to use the replacement method. The so-called replacement method replaces the hardware that is working normally into the faulty machine, and if it can start normally, you can determine which hardware is faulty.

This failure is usually caused by the following reasons:

1. The power supply of the computer host is damaged, although it can be turned on, it cannot be started normally, please replace the power supply.

2. The COMS chip on the motherboard is damaged, especially after being damaged by the CIH virus, the computer cannot start normally.

3. The power light of the host is on, and there is no other alarm sound, which may be CPU damage or poor contact.

4. The graphics card, memory and motherboard are not compatible, which will also cause the machine to fail to boot.

How to troubleshoot the computer boot without display. (No alarm sound).

Step 1: First of all, check whether the external wiring of the computer is connected, and plug in each cable again to see if the fault is eliminated.

Step 2: If the fault persists, then open the main chassis to check whether there is any excess metal in the chassis, or a short circuit caused by the deformation of the motherboard, and smell whether there is a burning paste in the chassis, whether there are burned chips on the motherboard, and whether the capacitors around the CPU are damaged.

Step 3: If not, then clean the dust off the motherboard and check if the computer is in good condition.

Step 4: If the fault persists, unplug the reset cable on the motherboard and connect it with other switches and indicator lights, and then use the change cone short-circuit switch to see if it can turn on.

Step 5: If you can't turn on the computer, then use the minimum system method, unplug the data cable of the hard disk, floppy drive, and optical drive, and then check whether the computer can be turned on. Then connect the above devices to the computer one by one, when connecting a certain device, the fault will recur, indicating that the fault is caused by this device, and finally focus on checking this device.

Step 6: If the fault persists, the fault may be caused by devices such as memory, graphics card, CPU, motherboard, etc. Then, use the plug-in method, swap method and other methods to check whether the memory, graphics card, CPU and other devices are normal, and replace the damaged devices if there are damaged devices.

Step 7: If the memory, graphics card, CPU and other devices are normal, then discharge the BIOS, use the isolation method, place the motherboard outside the chassis, connect the memory, graphics card, CPU, etc. for testing, if the computer can be displayed, then install the motherboard into the chassis for testing until the cause of the fault is found. If the fault persists, you need to return the motherboard to the manufacturer for repair.

Step 8: When the computer is turned on without display but there is an alarm sound, when the computer is booted up, the system BIOS starts to POST (power-on self-test), when it detects a fatal error in a device in the computer, it will control the speaker to send out a sound to report the error. Therefore, there may be a fault that the power is turned on without displaying an alarm sound.

If the computer is turned on and there is no alarm sound, the fault can be checked according to the meaning of the BIOS alarm sound to check the faulty device to eliminate the fault.

The natural problems of computers that are not used are also different, so let's analyze and analyze them together.

2.The monitor itself is faulty, and this requires the display to be replaced.

The power indicator on the monitor is always orange, indicating that there is no signal. There are various possible reasons for this.

Step 1: Check whether the connection between the monitor and the host is connected, you can dial it out first and then reconnect it to try again;

Step 2: If it doesn't work, then open the case, dial out the memory module and graphics card, wipe their gold finger part to remove the dust, dirt, oxide film, etc., and then plug it back in.

The third step, not yet, then you find a button-like CMOS battery on the motherboard, take out the positive and negative poles shorted, discharge for about 30 seconds, put it back on, start it up, if you can, it is a CMOS battery problem, change a battery is, 3 yuan right right can be bought.

The fourth step is not good, that is, there is a problem with the hardware of the motherboard or memory module and the graphics card itself, and it is recommended to send it for repair.

If what is said on the first floor is not a problem, in most cases you can change the graphics card, it may be that your graphics card is burned, and I am in the same situation as you.