The host doesn t start, the CPU turns around, and it doesn t reflect

Your problem is probably that you vibrated the various plug-in boards of the motherboard when you changed the monitor.,There is a phenomenon of poor contact.。。 First of all, unplug the monitor,Try to turn on to see if there is a startup sound,If it's normal, it must be a problem with the display and interface,If it's still the same,Then unplug the graphics card,Hard disk,CD,Memory, etc.,Try one by one,You can know what the problem is.。。 It may just be a bad contact, just pull it out and plug it in.

There may be 3 aspects to judge:

1.Graphics card issues.

Replug it in, clean the gold finger, and see if the fan is normal.

If it doesn't work again, it will be replaced free of charge during the warranty period).

2.Cable problem (replugging, checking VGA or DVI interface) 3Display issues (Check if the electrical outlet is powered on.) If it's convenient, connect it to other computers to see if it's normal).

It's not possible to restore with one click. If you don't have a system disc ready, the optical drive can be used. Start the computer and press the DEL key, set it to a disc boot in the BIOS, insert the system disk and reboot, basically complete it automatically according to the steps.

No, if you check that the system is free of viruses. It can only be a matter of heat dissipation. After using it for a long time, you can open the case to carefully sweep the dust inside, and add a little high-grade oil to the fan. The main problem is to reduce the temperature inside the chassis.

Let's discharge the motherboard first, if it doesn't work, you can only dial the memory, the graphics card, and slowly detect it.

Forehead... Try the motherboard jumper once and see

I'm all too familiar with this problem with your computer, because I've been struggling with this symptom of my computer for the past few days. Hehe.

Let's tell you the reason first, the problem is with the CPU slot. Nothing else is wrong.

The CPU slot of the motherboard is easy to do after a long time, if it can't be turned on, you just unplug the CPU and plug it in again, and you can generally turn it on after a few more attempts.

Or, you try it with the case lying down, and when my case is lying down, it is easier to succeed. But as soon as it stands up, it's over again. But you can tap the case case a few times with your hand to make the CPU vibrate slightly, and sometimes you get good results.

In short, it's just to multi-plug & knock your CPU, and once it's ready, don't touch your case again.

If you have a problem, hi me, communicate more, I've been tinkering with the computer for the past two days.

Also, it has nothing to do with the motherboard battery. Take it to the computer city to repair, and there is not much hope. It's possible that he's okay there, but it's a bumpy road, and it's not good to go home.

1.If the graphics card is broken, try changing the graphics card.

2.Check the graphics card slot to see if there is any bad contact, put the case down and turn it on! If you can open it, see if there is a problem with the needle.

Poor needle contact can also cause such problems! The host still runs on its own but it just doesn't light up!!

This is usually a memory module problem. It is recommended that you try a different memory module first. Or switch to another memory slot.

Then restore the BIOS settings. If not, you have to send it to the motherboard for testing. It could also be a power supply issue.

It's the same with my computer.

If your computer doesn't work right now, it's probably the same thing that happened to me. The chips on the motherboard can be burned out. When the computer city was sent for repair, the people in the computer city said that the motherboard was not lit, so they returned to the factory.

Later, I looked for information, and there are many reasons why the motherboard does not light up. Mine is that the Northbridge chip is broken. I don't know what kind of situation yours is.

But it is very likely that it is caused by the motherboard. It is recommended that you send it to the computer city.

Hello, focus on the connection plug between the graphics card and the monitor, unplug the graphics card to clean the slot, reconnect, replace the motherboard battery, I wish you happiness.

The computer starts the CPU fan and it doesn't respond.

It's because the power supply fan doesn't turn, I thought the CPU cooling fan didn't turn. It's the motherboard that's broken, the 4-core power supply is dedicated to the CPU power supply, it's called a small power supply, the CPU heat dissipation is not good, it will burn the MOS tube next to the CPU (black 3-pin component), the broken plug in the small power supply is not the main short circuit that is not turned on, and the power supply protection does not work. Return to after-sales maintenance, and pay more attention to CPU heat dissipation in the future.

The chassis can be equipped with a small fan.

One is that the fan power supply is not plugged in (if you have never removed the CPU fan, this situation should not apply to you).

The second is that the machine has been used for a long time, and the fan bearing is stuck due to lack of oil.

It may be that the power is insufficient, I encountered a surprise, that is, it will stop if it is not turned on, and the machine can be used normally after finding another power supply for the hard disk to power the hard disk alone.

The South Bridge is broken. However, there is a high probability that the power supply is broken!

1.Detect the power supply problem, unplug all the wiring, and short the power supply to see if the power supply is in good condition.

2.Check the motherboard, plug in the power supply to the motherboard, start it with a short circuit such as a screwdriver, and make sure that there is no problem with the motherboard power start, if it can start normally, it is not good to connect the computer between the boot button and the motherboard, this problem is generally not common.

3. Check whether the memory module is plugged in and whether it is covered by dust, unplug it, wipe it clean, and re-insert it, I don't know if there is a dripping sound at the beginning of the computer.

The motherboard burned out, the main circuit is fine, it is estimated that the capacitor breakdown is due to reinstallation.

Buckle the motherboard battery first and wait 5 minutes before putting it back on. If it doesn't work, just use the step-by-step replacement method to really have a hardware problem, the order is the power supply, memory (this can be erased with an eraser), graphics card, CPU, motherboard. The biggest probability of a problem in a hot day is the motherboard, and the components on the motherboard are soldered after the temperature is high.

Hope it helps.