The computer automatically blacks out the screen,Today s boot display is black and prompts to enter

The computer boot monitor automatically enters sleep (i.e., energy saving) mode because it does not receive a ** signal, which is generally caused by poor contact due to loose or oxidized memory modules, or poor contact of the display data cable, or damage to the memory, graphics card, monitor or data cable.

Solution: 1If the monitor is powered on but no signal is displayed, turn off (if the short press of the power switch is invalid, press and hold the switch until the power indicator goes out or directly unplug the power cord) Power off the case, replug and unplug the memory module, and wipe the gold finger with an eraser in one direction (the back of the thumb fingernail is also fine), if possible, it can also be installed in different memory slots, and then turned on after installation (before operation, you should also touch the wall with both hands to release your static electricity or wear anti-static gloves).

If you don't know how to operate, then it's simple: slap or kick the chassis once or twice (pay attention to the location: the front of the shell on the left and right sides of the chassis that has no interface at the back; Attention Tract:

Don't push too hard, and certainly don't be weak). The above may need to be repeated, and if it doesn't work, you need to replace the memory module. If you have more than two memory modules, you need to test them one by one.

2.If the above operations do not work, turn off the power and turn on the chassis, reinsert and remove the graphics card, wipe the gold finger of the graphics card, and plug in the data cable between the monitor and the graphics card. If it still doesn't work, consider that the cable or graphics card is damaged, then replace it with a new one.

3.If the monitor is not powered on (the indicator light is not on), check whether the power switch is turned on, then check the back of the monitor, plug the power cord connected to the monitor upwards (the power cord can be replaced if possible), and check whether the other end of the power cord is powered on to the outlet.

4.If the host can be displayed when connected to other monitors, and the monitor of this machine is still unable to display when connected to other normal hosts, the monitor is damaged and needs professional repair.

If it is a desktop, the power indicator and the hard disk indicator are on, and there is a self-test screen on the screen at the beginning, and the screen is black when you log in to the system desktop, then the biggest possibility is the graphics card driver problem. Solution: Press F8 when booting up, enter the safe mode system, find Device Manager, delete the graphics card driver, restart the computer to enter the system, and then use Drive Life to reinstall the graphics card driver (it is recommended to install the previous versions of the graphics card, the latest is not necessarily the best and most stable).

Sometimes it is caused by the poor contact of the graphics card or memory module, and at this time, there will also be a black screen and no response when booting up, it is recommended to reinsert the memory and graphics card, which can also solve this problem.

The last cause of the failure, that is, the hardware failure of the motherboard or graphics card, directly leads to no picture on boot, which can only be sent for repair.

1. Click the [Start] menu -- find the [Control Panel] and open it as follows:

2. Click [System Security].

3. Find and click [Power Options].

4. Click [Change Computer Hibernation Time] and change [Computer Hibernation State] to longer or 'Never', and then save the modifications.

5. After the setting is completed, the computer will not automatically enter the sleep state when you use it in the future.

Is it that the computer has not been operated for a long time.

Summary. Generally, the computer host is on, and the monitor is black, which is likely to be due to two reasons:

The first reason: it may be that the connection between the host and the display is not in good contact (especially the interface is not plugged in or loose), and there may be a problem with the data cable of this connection, so there will be no signal input to the screen, no display, black screen, but the host is still running normally, processing method: re-plug the connected data cable, or replace the data cable.

The second reason: due to poor contact between memory and memory slot, poor contact between the graphics card and the graphics card slot, resulting in a black screen and no signal output

Solution: You can turn off the power first, open the compartment, dial out the memory, use the eraser to wipe the part of the gold finger (that is, where there is a copper sheet,) back and forth a few times, and then insert it back into the memory slot (or insert it back into the memory slot), it's OK, if there is an independent graphics card, you can also use the same method to deal with the graphics card, and then insert it back into the graphics card slot, and finally install the machine, restart the computer and it's OK, (take the memory ** as follows:)

After the computer is turned on, the display screen goes black when it enters sleep mode, how to solve it?

Generally, the computer host is open, and the display is a black screen, it is likely to be two reasons: the first reason: it may be that the connection between the host and the display is not in good contact (especially the interface is not plugged in or loose), and there may be a problem with the data cable of this connection, so there will be no signal input to the screen, no display, black screen, but the host is still operating normally, processing method:

Plug the connected cable back in, or replace it. The second reason: due to poor contact between memory and memory slot, poor contact between the graphics card and the graphics card slot, resulting in a black screen and no signal output

Solution: You can turn off the power first, open the compartment, dial out the memory, use the eraser to wipe the part of the gold finger (that is, where there is a copper sheet,) back and forth a few times, and then insert it back into the memory slot (or insert it back into the memory slot), it's OK, if there is an independent graphics card, you can also use the same method to deal with the graphics card, and then insert it back into the graphics card slot, and finally install the machine, restart the computer and it's OK, (take the memory ** as follows:)

The power mode can be set.

Steps. 1. Click the start menu of the taskbar, find the "Control Panel" option, then open the control panel, and find the "Power Options" button in the control panel. Steps.

2. Double-click "Power Options" to open the setting window of power options, and then click to select the "Change Computer Sleep Time" option. Steps.

3. Finally, set the time of "turning off the monitor" and the specific time of "putting the computer to sleep" above the settings of the change plan. The time set here is up to the user to set it at will. After the setting is completed, then click "Save Modification" to complete the operation of setting the standby time of the computer.

Generally, the computer host is on, and the monitor is black, which is likely to be due to two reasons:

The first reason: it may be that the connection between the host and the display is not in good contact (especially the interface is not plugged in or loose), and there may be a problem with the data cable of this connection, so there will be no signal input to the screen, no display, black screen, but the host is still running normally, processing method: re-plug the connected data cable, or replace the data cable.

The second reason: due to poor contact between memory and memory slot, poor contact between the graphics card and the graphics card slot, resulting in a black screen and no signal output

Solution: You can turn off the power first, open the compartment, dial out the memory, use the eraser to wipe the part of the gold finger (that is, where there is a copper sheet,) back and forth a few times, and then insert it back into the memory slot (or insert it back into the memory slot), it's OK, if there is an independent graphics card, you can also use the same method to deal with the graphics card, and then insert it back into the graphics card slot, and finally install the machine, restart the computer and it's OK, (take the memory ** as follows:)

It should be a memory or graphics card problem, try to plug and unplug the memory first, if you still can't see the graphics card, the operation needs to be carried out under power failure.

If the computer is turned on, the computer display screen will go black when it enters sleep mode, then you wake it up and the screen will not go black, if the screen is still black after waking up, it is a system problem, which you can solve by repairing the system.

When the computer is turned on, it shows that it enters sleep mode.

In this case, it is generally necessary to reinstall the system and troubleshoot the software.

Pick up the mouse and shake it, and a dialog box will appear on the desktop, with the words "end sleep state", which can be woken up by clicking with the mouse. Some require a wake-up passcode.