My 787 upgrade has a black screen, and I can t turn it on again

Bricks? Try it hard....

How to troubleshoot the failure of the computer without display when it is turned on (check whether there is a bulging capacitor).

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.

Discharge the BIOS battery (restore the BIOS factory defaults) It is recommended to plug and unplug the graphics card and memory, clean it up, and polish the gold finger of the graphics card and memory.

The specific point you want to talk about, is it a laptop or a desktop computer, and will the power signal light of the display light light be on when it is turned on? If it will,At the time of booting, the Andel key can see if you can enter the BIOS,If you can enter, you have to check from the host memory,If you can't enter, you have to see if it's a display problem。

You see if it's plugged in.

It's time to go to the computer city to install the system, or you can install it yourself, a disk is a few yuan, and you can also use a USB flash drive to test one.

The system is broken.,I've had such an experience.,It's good to redo the system.,Go to the computer city to buy a system version of the number one version of the thief and install it yourself according to the prompts.。

Plug the memory back in and out, try it, there are many reasons for the failure.

Is it a black screen as soon as it is turned on If so, there are two possibilities.

One is that system problems need to be installed.

The second is the hardware problem, and the specific ones are going to the after-sales service.

It should be something wrong with the system.

The true black screen is mostly a problem with the graphics card chip,If it is the chip of the NVIDA graphics card door, including the integrated graphics card, if you want to completely solve it, you must change to a new and improved version of the graphics card chip,Otherwise, it must be **,If it is not the chip of the graphics card door, such as ATI, you only need to add welding。

Remove the power cord, remove both ends, remove the battery, remove the memory and put it back on.

The tip is that your laptop does not allow it to start normally because of the overheating temperature, and it says several possibilities above, I list it for you, and you checked it yourself:

1) The temperature of the machine is too high due to poor heat dissipation.

2) The CPU fan is broken or abnormal, causing the system to be unable to dissipate heat, at this time, you can try to press the "Enter" key to see if it can enter the system

Booting up and pressing F8 may work.

1 All Hello! In this case, it is likely that an important component of the computer motherboard is damaged, and it is recommended that you take the host computer to a regular computer repair shop for repair in order to solve the problem. Hope it helps!

1.Is it a black screen that can't turn on the machine? Then before turning on the machine, please do a careful check to see if the plugs and data cables of each part are firmly inserted, 2Look at whether it is dead, or there is a problem with the graphics card, or a system virus, and furthermore, see if there is a problem with the power supply, etc., whether it can be turned on, and then the screen is black again, or it is directly shut down, check it well, I believe it should not be a big problem!

Good luck!

Hello, I also had such a problem, I found a lot of ways, no, in the end it was for the maintenance boss, it took 70, changed the cable, if you want to come out, I propose, go a few more, there will be a different ** Oh.

The easiest way to do this is to take a look at the power supply.

The common causes of a black screen are: one, the power supply chip is damaged, two, memory problems, and third, BGA (graphics card. North and South Bridge) is caused by the virtual soldering of the packaging chip, and there is also a situation where the screen is dark faulty, and many netizens think that it is a black screen phenomenon. It is recommended that you send it for repair.

If the memory module is broken, or not plugged in properly, unplug it and plug it in a few more times.

No light at all? Is it a desktop? Be clear.

Buy a reload plate Reinstall the system C disk looks like it is going to be formatted.

The system file is corrupted and the desktop is not displayed properly.

It is recommended to reinstall the operating system.

Find a brick. smashed the main machine into a channeling spark. That's it.

Reboot into safe mode and uninstall QQ Manager.

Immediately after booting, the f10 comes out of the option, click on the reply to the recent settings.

Reinstall the system, did you delete something?