My computer s monitor has a black screen? The computer screen is black, and the monitor screen is bl

Please be responsible when you ask a question, is the host not starting? Or does the display not light up after the console boots?

Or is the monitor completely unpowered?

Since I don't know the specifics, I'm going to paste a general solution first.

A black screen is a common phenomenon, especially on older computers or builds. There are many reasons for the failure of a computer's black screen, such as a damaged monitor, a damaged motherboard, a damaged graphics card, a power supply that is not in contact with the graphics card, and a damaged CPU.

1) The display is powered off, or the data cable of the monitor is not in contact with the grain, and the power cord of the monitor is easy to oxidize and damage if the computer is used for too long;

2) There is no power supply to the motherboard;

3) Poor contact or damage to the graphics card;

4) Poor CPU contact;

5) Poor contact of memory modules;

6) The machine is infected with CIH virus, and the BIOS is destructively refreshed;

7) Check the plugging and unplugging, if necessary, you can use a rubber to remove the oxide film on the gold finger;

8) If the floppy drive has a floppy disk, many times it will cause the computer to start or restart, and the computer will have a black screen and cannot enter the system. To avoid such situations, it is also possible to cancel the floppy disk boot item in the BIOS.

For the treatment of the black screen of the computer, the method of eliminating and replacing is basically adopted, and the principle should be based on replacing and eliminating the most suspicious parts first. For ordinary computer users, professional knowledge is insufficient, you can follow the following steps to analyze the cause of the failure, so that you can do it yourself.

First of all, check whether the contact between the graphics card and the monitor is good, and whether the contact between the graphics card and the motherboard IO slot is good, if necessary, you can remove it and reinstall it once to ensure that it is installed in place and has good contact.

If there is no problem with contact, it is best to try a different monitor to make sure that the monitor is fine.

If there is no problem with the display, check whether the CPU fan is running, if it is running, use a multimeter to measure whether the voltage output is normal to 12V, 15V, if not, try to change the power supply.

If the black screen still appears, take out the components installed in the computer, leaving only the CPU, graphics card, and memory sticks, and the cause of the fault can be limited to the CPU, motherboard, and memory. Generally, if there is a fault in the memory, there should be an alarm sound. If the memory fault is ruled out, only the CPU and the motherboard are left.

Change to a normal CPU (should be compatible with the tested computer), boot the computer and re-test, if the black screen still appears, you can only change to a motherboard, and the problem should also appear on the motherboard.

Black screen in the above case?

Hello, it's just a black screen on the monitor! Is there an indicator light display on the host or keyboard at this time? Follow-up:

The keyboard is not lit, but the host is lit:

The indicator light on the keyboard needs to be pressed to light up. It looks like there is no signal output to the monitor on the graphics card side of the host. Possible Causes:

1.The signal cable from the main unit to the display is loose.

2.The host graphics card is loose (if you are not using an integrated graphics card).

3.The graphics card is faulty. Follow-up:

The easiest way is to find a good machine and replace this graphics card, if it still doesn't show, then there is something wrong with this graphics card. Follow-up:

Could it be a problem with the system, and whether it needs to be reinstalled:

Personally, I don't think it has much to do with the system. Don't know about this"Power saving mode"Did it appear after the system booted normally on my desktop, or did the computer not boot normally at all? By the way, can I force the monitor on and see the computer screen? Follow-up:

Yesterday the computer was stuck, and then I forced it to shut down, and then turn it on, after the computer screen appeared in Lenovo, it entered the power-saving mode, and the screen went black after a while. ：

Press when powered on"f8"to see if you can start Safe Mode.

The black screen of the computer boot is mostly a problem with the hardware of the computer host, check the quality of the hardware such as memory, graphics card and motherboard.

There are times when our computer monitors take a long time to light up, what is going on? Let me give you a brief introduction to the reasons why it takes so long for a computer monitor to turn on! Hope you enjoy it!

Analysis and solution of the reasons why the computer monitor takes a long time to turn on:

The computer boots on the display screen for a long time to light up, there are about 2 situations:

One: the display is dark red at first, and it is actually displayed every few minutes, and then it has been dark red directly, which is the aging of the lamp, and it is necessary to find a professional computer maintenance solution;

Two: The display is not displayed after turning on, and it will be displayed after one or two hours, which is the aging of the chip, which is caused by the fact that the display is not turned off after the computer is often turned off, and it takes more than 100 yuan to change a piece.

Three: The display manufacturer can repair it, and the general home appliance maintenance department can also repair it, and take it to repair.

Analysis of the reasons why the additional display does not light up:

1. Check that the display is not powered on or turned on.

Generally, there will be a power-on indicator on the display, you can look on the display to see if the display has been turned on, generally if it is turned on, it will light up directly.

If you have pressed the switch and it still doesn't light up, then please check whether the power cord socket is powered on, try another socket, or try another power cord (generally speaking, the power cord on the LCD display and the power cord on the rice burger and the main chassis can be used universally).

Generally speaking, if you move the main unit frequently, when the light does not turn on, it is likely that the power cord is in poor contact or the wire inside is broken.

2. Check whether the VGA database of the monitor is plugged in.

When the power supply is okay. At this time, some information appears on the display, such as the display showing a prompt such as "no signal". At this time, it is necessary to check whether the line shown in the figure below is plugged in.

In addition, remember not to plug in the data cable of the display cable incorrectly, if you have a discrete graphics card, you should insert a discrete graphics card. If you don't have one, plug in the integrated graphics card.

There are also some netizens who may be independent graphics cards, but the display prompts "no signal", then it is possible that there is something wrong with the independent graphics card, first unplug the independent graphics card, clean up the gold finger part of the independent graphics card, and at the same time clean up the graphics card slot and then plug it back in.

The solution to the additional monitor not lighting up:

The first thing to do is to press and hold the power button to turn off the computer.

Remove the screws (usually two) on the back of the main computer and remove the case panels on the sides.

Open the case and you can see that there are two card slots next to the fan, and at least one card slot has a memory module (usually green) inserted into it.

Here's how to recover a computer monitor after a black screen due to overclocking

1. Tools Raw Materials:

Dell i5, Windows 7, the system comes with the "Control Panel".

Second, the specific steps:

1. Click the "Start" icon button in the lower left corner of the computer, find and click the "Control Panel" option on the right side of the pop-up menu. Chain judgment.

2. Find "Appearance & Personalization" in the control panel interface and click on the "Adjust Screen Resolution" option below.

3. Find and click the "Advanced Settings" function button in the lower right corner of the screen resolution setting interface.

4. Click the "Monitor" function in the second column at the top of the monitor's advanced settings interface.

5. In the monitor's settings, find the drop-down triangle arrow under the "Screen Refresh Rate" bar, and click the drop-down arrow.

6. Re-select the refresh rate of the screen to solve the problem of overclocking the monitor.