The computer does not power on after changing the chassis, and the motherboard does not respond afte

If the replacement model is different, you can see if the socket inside is not plugged in tightly, or the power supply inside is not connected properly.

If the computer does not power on after changing the chassis, it means that there is a problem with your circuit motherboard, or there is a problem with the installation of your hard disk, and it is recommended to find the cause.

If there is no internal power, it may be because some related hardware has an abnormality relative to those operations, so for the explanation of the heavy situation, you can check the description of some internal states and some aspects that affect the use of the state.

It is recommended that you see if the chassis is in contact with the motherboard, it is recommended that you try to use the computer diagnostic card to see what the fault is caused by, so as to facilitate understanding and solving the problem, if you don't have anything directly, you can only be fooling... It's purely a matter of character and luck. Good luck.

Try to change back to the original case, if it doesn't work, please check the hardware, whether it is in poor contact, or damaged.

The power is not turned on because there is a problem with the system in the computer, so it will cause this, and then you can restart it.

If the computer does not power on after changing the case, then the power cord should not be plugged in properly, and the case needs to be reopened to plug in the power cord.

That is, you may not have done it when you switched.

This is actually nothing, we really don't repair it, I suggest you repair it again.

If the computer does not power on after changing the case, it may be that the power socket behind your case is loose or mismatched.

The wiring is wrong, the wiring is bad, plug and unplug the memory module, the power cord, check, whether the other lines are connected, and whether the motherboard discharge is protected.

In this case, you can be very clear, you have the corresponding hardware incompatibility, in fact, after you reinstall and assemble, the memory hard disk at this time must have a certain error or produce the corresponding systematic damage to this data, you mainly check these three aspects of the problem can be solved under normal circumstances, or when you install the corresponding CPU motherboard, whether there is a corresponding data cable is not installed in place, Usually these causes can be solved.

In this case, there are generally some plug-ins that are not connected properly, or are connected incorrectly. Recheck and unplug each plug a few times. If it still doesn't work, it may be that the power supply of the new chassis does not match, such as the power is smaller than the original power supply, etc. FYI.

If the computer host is replaced with a new chassis and reassembled, then, the line must be connected, the line is very important, in your case, the motherboard power display card light is on, but the fan is powered off, indicating that your power line is not connected, the fan plays a role in exercising, so the line should be connected, find out the main fault of the line, and then turn it on

Check that all hardware interfaces are correct, especially the panel wiring on the new chassis.

In this case, it is still your incorrect assembly or wiring problem, otherwise it would not be the case.

Plug the interface back in.

If the accessories of the machine are all on the original computer, it should be that your memory module is not plugged in loosely, or it may be that the gold finger or the slot is dirty.

It is recommended to re-wipe the gold finger and slot of the memory stick, using facial tissue.

If you still can't solve the problem after wiping it carefully, you can also unplug it, then remove the motherboard battery, and connect the battery slot with a wire for more than ten seconds. After that, install the motherboard's battery, and it should be fine.

Troubleshoot the computer that won't turn on and the screen is black.

Many times we will encounter the phenomenon that after pressing the computer boot button, the computer cannot be started, and there is no POST or enter the operating system, which often makes the user unable to deal with and affect the normal use. Here, we make a brief analysis of common fault phenomena, analysis and solutions, hoping to help users who encounter such problems.

There is no reaction after pressing the power button.

Fault phenomenon: After powering on, the screen does not have any display, and no "dripping" sound of the motherboard speaker is heard.

Fault analysis: The internal BIOS data of the COMS chip of the motherboard is damaged by CIH virus or static electricity, etc., and cannot be read, and the system cannot complete the self-test when it starts, so it cannot be started.

Known solution: Contact the motherboard manufacturer to replace the COMS chip with a new one or find the BIOS file provided by the motherboard manufacturer and write it to the burner.

Fault phenomenon: After pressing the power button, the optical drive light flashes, the motherboard power prompt light is on, and the power supply is normal, but the screen is not displayed, and there is no "drip" sound.

Fault analysis: This phenomenon occurs after the CUP is damaged, the BIOS first checks the CPU during the self-test process, the CPU is damaged and cannot pass the self-test, and the computer cannot be started.

Known workarounds: Check if the CPU is installed correctly, check if the CPU core is damaged, check if the CPU is damaged using the replacement method, and replace the CPU if it is damaged.

Fault phenomenon: there is no display or prompt when the boot is turned on, the motherboard power supply is normal, the cup is normal, the fan is normal, but the screen is not displayed. There is no "drip" sound of passing the self-test.

Fault analysis: After the computer is used for more than 3 years, the voltage of the battery that powers the BIOS settings gradually decreases, and the data cannot be saved.

Known solution: Buy the lithium battery of CR2032, replace the existing battery on the motherboard to complete the self-test normally, and then reset the BIOS parameters.

If the power supply is broken, then there will be no reaction after your computer is powered on, for example, some computers will have a special prompt sound when plugged in, or there will be an indicator light on the host computer that is connected to the power supply.

If it is an assembled computer, it may not have the prompt of power connection in 2 above.

Because after you pressed the switch of the multi-purpose socket, the multi-socket flashed there, so it can basically be concluded that the computer power supply is burned. Because when the power is first turned on, the voltage may be too high and burn the power supply, which is very common, and it has a lot to do with the quality of the power supply.

Since there is no response when the power button is pressed, it is estimated that the problem can be determined to be in the power supply.

To sum up, your computer at least has a broken power supply. There is little chance that other parts will be burned, because there is a power supply to protect it, and a great power supply will generally exchange its own life for the remnants of most parts.

It is estimated that the boot cable was connected incorrectly after changing the chassis.

[The display and other lights are flashing] just proves that the host is not starting!

I just changed the power supply of the case, and I can't get up after connecting it, and the chassis starts up, which is normal, I'm afraid it's not normal; Check the following:

Under normal conditions for the display and display links:

1. Pay attention to listen after turning on the machine, and you must hear it"Drops"One sound, that is, it must be passed"Self-test! Otherwise, nothing else can be talked about.

2. Plugging and unplugging the memory also did not solve the ?..Continue to check the CPU, gently take it off and press it gently. Not yet:

3CPU fan turn; But doesn't start: Power protection (term. A kind of power failure), continue to replace the method, change the power supply for a try;

4. Whether the hardware of the power supply part of the motherboard is abnormal, especially whether the electrolytic capacitor has leakage, bulge, and discoloration. It also affects the above problems [the keyboard and mouse monitor does not respond after the computer is turned on].

1CPU carefully disassembled, safe and stable installation! 2. The key is to get the 'drop' self-test sound out! 3. Check for no signs of starting: the motherboard, CPU, and power supply are powered to the plug of the motherboard.

Software: There is a 'drop' self-test sound that does not start: the system is bad!

Unplugging the graphics card, memory modules, polishing the connector with an eraser, and cleaning the dust from the card slot with a toothbrush work wonders. Don't think that the display is not lit up must be a problem with the graphics card, it is more likely that the memory module is not connected.