Urgent!!! The computer is powered on, and the external device is out of power

Check whether there is a problem with the graphics card first, and then look at the display, generally the machine can run and turn on and does not light up, which is basically a problem with the graphics card.

I didn't understand what I was thinking. But I know that if you start the computer before turning it on, you should start the external device first and then start the host power, because the computer needs to be booted to check whether the device is normal, there is this order.

I've had this kind of problem, but mine has a problem with the graphics card chip, and it's just a matter of changing the graphics card.

If you are a discrete graphics card, it's very simple, it's OK to change the graphics card, if it still doesn't show up after changing to a new discrete graphics card, I suggest you remove the battery on the motherboard, put it on for 5 minutes and then install it, so that the system settings will be restored to the default value, you can disassemble the hard disk and you can see the picture again That's impossible, because your system is in the C drive, the C drive belongs to the hard disk, you remove it, the computer will not run the system,

If it's a motherboard issue. When the computer is turned on, the BIOS is not displayed. Motherboard screen.

That's the motherboard can't start,There is a BIOS screen when you boot up, that's the hard disk doesn't start, there is a possibility that it will kill people,Let's see if the power and reset buttons on the panel are normal,The reset is stuck,You'll die ugly,Hehe。

Clean the chassis hygiene...

The final standard processing step:

1. Unplug all power connections (hard disk, optical drive, graphics card, etc.) from the motherboard, and unplug all connecting cables (hard disk, optical drive, etc.).

2. Remove all the accessories on the motherboard (graphics card, memory, network card, etc.) 3. Only the CPU (including the fan) is left on the motherboard, then turn on the power supply, listen to whether there is a memory alarm sound, if not, take off the CPU and reinstall it again, if there is no memory alarm sound, send it for repair.

4. The landlord is no sound when the memory is removed, and the next one will not be said.

1. "Only leave the power supply, motherboard, CPU, turn on again, or no picture comes out", this method is not right, if it is a centralized display, it should also be plugged in with memory, and it can't be turned on without memory.

2. Press the reset button a few more times (note that it is a reset, that is, the restart button) to see if it is stuck, and the reset button will also cause you this symptom.

3. If it doesn't work, there are two reasons, one is the motherboard, and the other is the power supply.

Have you ever done a self-test?

If the self-test is not successful, after excluding the memory graphics card CPU is not plugged in tightly.

See if the motherboard capacitor has a burst of pulp, and if the circuit is fine, it is estimated that it is a motherboard problem. If it's an intel board, see if there's anything wrong with the South Bridge.

There are two beeps, it depends on what kind of sound it is, 2 short: memory ECC check error. Setting the memory option for ECC check to Disabled in CMOS Setup will solve the problem, but the most fundamental solution is to replace a memory.

1 Long 1 Short: There is an error with the RAM or motherboard. Try to change the memory, if it still doesn't work, you have to change the motherboard.

How to troubleshoot the computer boot without display: Step 1: First 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.

In fact, why do you bother so much, you just test the place where the machine is reported to repair the computer, they have professional tools to test the hardware, why disassemble it yourself for a long time?

Based on my experience, it is estimated that you have a power supply problem, and the power supply is aging and the supply point is insufficient, which will cause this kind of situation. In addition, this kind of situation can also occur when the power supply of the monitor is short-circuited, and if you don't test it, it can only be speculation for everyone to tell you this kind of literally, because many reasons may cause your situation.

It is still recommended that you take it to a professional computer repair place and ask them to test it without charging money.

You've already said it yourself, the monitor is good, that's for sure, the problem must be with this host. You say that the host can boot and enter the system, which means that all the accessories of the host are good (mainly the graphics card), but it just doesn't show it, it should mean that it is not displayed from beginning to end. The graphics card is good, and the display is also good, so it can only be a problem with the interface, to be precise, there is a problem with the interface of the graphics card.

If there are other interfaces on the graphics card (there may be DVI, VGA, HDMI, S terminals, etc.), try to change the interface, because the interface is different, you may need to change the interface or change the signal cable. What is more certain is that the graphics card is not broken, but there is a problem with the interface.

What do you mean by "the console is still running as it was normal"? Is there a "Didi" sound, the hard disk light still flashes regularly like a normal start, and then it feels like it doesn't flash after starting? Press the power off key on the keyboard and then it will shut down normally?

If that's the case, it's a display issue.

Cables, monitors, graphics cards, troubleshoot in that order. First.

If you only use the power supply, the motherboard and CPU can't turn on, you can fully confirm that it is the motherboard problem. Check whether the various capacitors of the motherboard have burst open, and then check the relevant chips, if you are not familiar with it, it is best to send it to the computer hospital.

Please resolve the issue as follows.

1.Ballast with a hammer.

2.Throw it in the trash.

3.Go to Suning and buy a new one.

4.Take it home and press the power button.

5.The picture is there, and the problem is solved satisfactorily.

I said that Didi had two sounds, and it was obvious that I couldn't find the graphics card.

It's either not plugged in properly or the power supply is insufficient, or the graphics card is broken.

It's obviously a motherboard or CPU problem, so take it for repair!

Simply check if there is a problem with the internal power supply, or check if the BIOS has a virus. Or there is a problem with the BIOS settings. Try to restore the BIOS to its default state.

Check whether the data cables on both ends of the monitor (plugged into the main unit and plugged into the monitor) are loose.

The power or data cable of the monitor is loose. - This is the correct solution.

I've encountered it before, it's the motherboard that is broken.

Go find a normal monitor and replace it.

Empathy.

As soon as this kind of problem arises, stop for a few hours and an afternoon.

should be accessible.

It's a desktop.,Is the data cable connected?,According to what you said, if the power supply is replaced, it shouldn't be the case that the display is out of power.,There's no signal transmission, right?

Check that the data cable is properly connected.

Has the memory module been moved, is it loose?

Look at the graphics card, is it not plugged in?

The landlord can first see if there is a 6-pin or 8-pin power supply on the graphics card that needs to be externally connected.

I hope it helps you, please ask if you have any questions.

It depends on what kind of computer it is.

If it is an ordinary laptop, the power is about 100W or less when you turn on and run software or surf the Internet, and there is only about 1 kWh of electricity in 12 hours; If it is a game book, playing a large 3D game, the power is about 200W, and the power is about 2 to kWh for 12 hours.

If it is an ordinary desktop, the Internet power is generally 100 to 150W, and it is about 1 to 2 kWh of electricity in 12 hours; If it is a top-of-the-line desktop, when playing large-scale 3D games, the power is three or four hundred W, and the power is about 4 to 5 kWh in 12 hours.

It mainly depends on configuration and usage.

Your computer may not have been cleaned for a long time, the solution is: open the case with a small brush to clean the dust; And take off the memory and graphics card, and use an eraser. Should solve the problem!! Give it a try.

Brother: It lit up in more than ten minutes.

You dust the machine.

It is also possible that there is electromagnetic interference.

It's your memory module that is too dusty, just buy an eraser and it's OK.

Press the case switch to see if there is any response. If there is a response, check the power supply of the hard drive. Is the data cable loose? If it doesn't work, clear the BIOS and try again. (Disconnect the power supply.) Take the battery off).

The hardware self-test is abnormal, due to other hardware damage on the motherboard, or it may be an external device (focus on checking the keyboard).

The hard drive didn't recognize it, did it?

Go to BIOS and take a look.

You have to start this many times to be able to start, there are many reasons, the power supply is there, the boot line is there, the restart line is there, the motherboard power supply line is there, this reason is really difficult to find out, the repair shop is the same, the best way is to remove all the parts and connect them again!!

Most of them are broken motherboards. Power supply is also possible. First of all, see if the connection line inside is strong. Second, find a power supply and try it. It's best to visit a repair shop.

Have you checked that your various parts are powered on?