The computer turned on 3 times, and then there were 4 black dots on the display

The two brands of BIOS are not the same.

award bios

1。1 Short: Normal start.

2。2 Short: General error, clear into CMOS setup to reset the incorrect option

3。1 long and 1 short: There is an error in the memory or motherboard. Try changing a memory module, if not, change the motherboard.

4。1 Long 2 Short: There is an error on the monitor or graphics card.

5。1 long and 3 short: The keyboard controller is wrong. Check the motherboard.

6。1 Long 9 Short: Motherboard Flash RAM or EPROM error, BIOS corruption. Try a different block of flash ram.

7。Constant ringing: (Loud) The memory module is not plugged in tightly or is damaged. Reinsert the memory module, or update the memory module.

ami bios

1.1 Short: The memory refresh failed. Replace the memory module.

2.2. Short: Memory ECC verification fails, in CMOS Setup, you can solve the problem by setting the ECC verification option to Disabled, but the most fundamental thing is to change the memory module.

Short: The basic memory check of the system fails. Change memory.

Short: The system clock is wrong.

5 5 short: CPU error.

6 6 Short: Keyboard controller error.

Short: The system is in real mode and cannot be switched to safe mode.

Short: Displays a memory error. If there is a problem with the display memory, try changing the graphics card.

9 8 Short: BIOS chip check and error.

Long 3 Short: Memory error. The memory is corrupted and it is recommended to replace it.

Long 8 Short: Displays a test error. The monitor cable is not plugged in properly or the graphics card is not plugged in properly.

Your graphics card is bad, or it's a motherboard problem.

Memory not plugged in? It's not very clear.

Summary. Dear, hello, I'm glad to answer your question, after the computer is turned on, the reason why the monitor is black is as follows: 1. Press the upper and lower case keys on the keyboard.

The light is on, indicating that the graphics card, monitor, and other hardware are faulty. 2. If the keyboard light does not light up, it means that it is a memory, CPU, motherboard, or power supply problem.

What is the reason for the black screen of the monitor after the computer is turned on twice?

Dear, hello, I'm glad to answer your question, after the computer is turned on, the reason why the monitor is black is as follows: 1. Press the upper and lower case keys on the keyboard. The light is on, indicating that the graphics card, display detector, and other hardware are faulty.

2. If the keyboard light does not light up, it means that the memory, CPU, motherboard, or power supply problem is ruined.

Dear, after the computer is turned on, the solution to the black screen of the monitor is as follows: 1. The keyboard light does not light up First wipe the memory stick with an eraser, and check whether the gold finger of the memory stick has any burnt marks. Replace the memory in the slot.

2. Check the capacitors and resistors on the motherboard, see if the capacitors are bulging and have a bright trouser beam, whether there is a burning smell on the motherboard, and clean up the dust on the motherboard. 3. Remove the CPU fan, power on and turn on, test whether the CPU has a temperature change by hand, if not, the CPU is not working, either the motherboard is broken, or the CPU is not plugged in well, and the power supply is re-plugged. 5. The display card is loose, or oxidized, the keyboard light will be on, the screen is not displayed, wipe the gold finger of the graphics card with an eraser, and check whether the capacitance on the graphics card is bulging 6. Minimize the test method, only leave the power supply, motherboard, CPU, memory, graphics card, keyboard, monitor, unplug all the pure round wires on the rest of the motherboard, use a dart wire knife to short the switch pins, if it is normal, then add the rest of the hardware, piece by piece, until the cause of the problem is found

Summary. Generally these two reasons 1Press the case on the keyboard. The light is on, indicating that the graphics card, monitor, and other hardware are faulty. 2.If the keyboard light does not light up, it means that there is a problem with the memory, CPU, motherboard, or power supply.

What is the reason for the black screen of the monitor after the computer is turned on twice?

Generally these two reasons 1Press the upper and lower case grip keys on your keyboard. The light is on to indicate that the graphics card, display calendar, other hardware faults, etc. 2.If the keyboard light does not light up, it means that there is a problem with the memory, CPU, motherboard, or limb pulsation power supply.

Solution: 1. If the keyboard light does not light up, first wipe the memory module with an eraser, and check whether the gold finger of the memory module has any burnt marks. Replace the memory in the slot.

2. Check the capacitors and resistors on the motherboard to see if the capacitors are bulging, whether there is a burning smell on the motherboard, and clean up the dust on the motherboard. 3. Remove the CPU fan, Zhaobi Tong seeps only the electricity to turn on, test whether the CPU has a temperature change by hand, if not, the CPU is not working, either the motherboard is broken, or the CPU is not plugged in well, and the power supply is re-plugged, although the power supply is powered on, but the motherboard cannot be allowed to work normally, replace the power supply and try it. 5. If the display card is loose or oxidized, the keyboard light will be on, the screen will not be displayed, wipe the gold finger of the graphics card with an eraser, and check whether the capacitance on the graphics card is bulging.

6. Minimize the test method, only leave the power supply, motherboard, CPU, memory, graphics card, keyboard, monitor, unplug all the wires on the rest of the motherboard, use a screw knife to short the switch pins, if normal, add the rest of the hardware, piece by piece, until the cause of the problem is found.

It seems that the memory is not plugged in properly. You try plugging in the other slots and seeing. It should be that the memory is not well inserted. Try a few more times. An alarm sound indicates that the CPU motherboard is normal. Either the memory or the graphics card is not plugged in.

Remove the lithium battery from the motherboard and put it back on after a minute. Turn it on again and see what it looks like.

Plug the memory back in, or the graphics card back in and out.

If you're a tinkpad computer, flip it over and shoot two ha, the probability of success is 100% in my case, two minutes ago, my computer was normal, !! I just don't know if your computer is skinny, anyway, my skin, hahahaha!

It may be that the laptop's battery is dead, so plug it in and try it.

Tell you to press f1 or f2

It means that your BIOS is not set up, enter the BIOS and turn off the floppy drive, the black screen at boot is another reason, such as the resolution is not adjusted well, you try to press F8 when you boot up, enter with VGA mode, the sound is particularly loud, that is the relationship between the fan, not caused by the directness of the system, open the case to see the fan, it is best to clean up the dust.

1.Check that the monitor cable is firmly and reliably plugged into the host interface, and then check that the contact between the graphics card and the motherboard's I-O slot is good;

2.If the computer starts normally with another monitor, the original monitor may be damaged;

3.Check if the CPU fan is running;

4.You can remove all components except the CPU, graphics card, and memory sticks, and then power on the computer. If there is a fault in the memory, there should be an alarm sound. If there is no alarm sound, then turn on the CPU and re-detect. If the computer screen is still black, it is recommended to replace the motherboard;

5.Whether the system has installed software and update patches, and if so, uninstall the update files;

6.After installing the software on the computer, restarting the update results in a black screen, just wait for the update to complete;

7.You can go into safe mode to repair your computer, if you can't enter safe mode, please reinstall the system.

Hello. What is a boss? Is it BIOS?

But modifying the BIOS is also flat enough to make the computer boot up with a black screen? The computer has a black screen when it is turned on, and there is an alarm sound, in most cases, it should be caused by a hardware failure. It is recommended that you first check whether the hardware has poor contact, take out the memory module, graphics card (if there is a discrete graphics card), use the eraser to repeatedly wipe the gold finger part back and forth, and then plug it in again.

If this is still a black screen, consider reinstalling the system first, and then it doesn't work, then you have to send it for repair.

Ring three times One long and two short is the problem of the graphics card, wipe the gold finger of the graphics card clean, the slot is clean, and it should be solved by inserting it a few more times. Pay attention to the sound changes.

Are the three tones long or short or the same length?

First, first confirm that the hardware is fine. If the speaker is fine, the sound card is fine, and if you've tested it on other machines and it's really good, then you can read on.

2. Make sure all the cables are exactly right. Then power on the speaker and turn on the volume switch.

3. Install the driver of the sound card correctly, if it is an onboard sound card, it is best to install the driver provided on the driver disk of the motherboard.

In fact, the computer does not make a sound, and many times it is because the sound card is not driven correctly. In general, after the sound card driver is installed, there will be a small speaker icon in the taskbar in the lower right corner. ）

Fourth, if you are sure that the driver is installed correctly, then take a look at the volume settings in the computer.

The specific method is to double-click the speaker icon in the taskbar, and check whether the volume is turned off to the minimum in the "Volume Control" and "Waveform" dialog box in the pop-up "Volume Control" and "Waveform".

If these two options are not available in the dialog box, click on the "Options" menu - select "Properties" - select "Volume Control" and "Waveform" in the "Show Volume Controls" and then set them correctly.

Note: Step 4 can only be set up after the driver for the sound card has been installed correctly.

The computer boots up with a black screen, no beeping, reason:

1. Memory failure;

2. Graphics card failure;

3. The display is faulty.

Solution: 1. Unplug the memory, wipe the metal strip part, and then plug it back in.

2. Unplug the graphics card, check it (including whether the graphics card is connected and whether the graphics card itself is damaged), if there is a spare graphics card, it is recommended to replace the backup graphics card and restart it;

3. Replace a monitor and reconnect it for testing to eliminate the display fault.