1. My computer’s screen goes black if I don’t use it for a long time. What should I do?
A black screen on the computer monitor is a problem that users often encounter when using computers. In fact, as long as you have a certain understanding of the main components of computer hardware, such as the motherboard, CPU, memory, and graphics cards, simple faults that are not damaged by components can be eliminated by yourself. When this happens, you can follow the following maintenance steps and methods for analysis and simple repair:
1. Check whether the host power supply is working
Is the power supply fan rotating? Move your hand to the air outlet of the switching power supply on the back of the host chassis. If you feel that there is wind blowing out, the power supply is normal. If there is no wind, the power supply is faulty. Check whether the three indicator lights of the keyboard (NumLock, CapsLock, ScrollLock) flash when the host power switch is turned on. one time? If yes, the power supply is normal; are the power indicator light and hard disk indicator light on the host panel bright? If it lights up, the power supply is normal. Because the power supply is abnormal or the motherboard is not powered on, the monitor does not receive the data signal and will obviously not display it.
2. Check whether the monitor is powered on
Is the power switch of the monitor turned on? Is the monitor's power light on? Is the monitor's brightness potentiometer turned off to the minimum? Is the high-voltage circuit of the monitor normal? Is there a "hissing" sound when you move your hand to the monitor screen? Are the hairs on the back of your hands standing up?
3. Check whether the contact between the display card and the monitor signal line is good
You can unplug the plug and check whether there are bends, broken pins, or a lot of dirt in the D-shaped socket. This is A common problem faced by many users. When connecting the D-shaped socket, due to uneven force, or forgetting to tighten the socket fixing screw, the socket contact is poor, or due to improper installation method, excessive force causes the needle in the D-shaped socket to break or bend, resulting in poor contact, etc.
4. Open the chassis and check whether the graphics card is installed correctly and is in good contact with the motherboard slot.
Whether the graphics card or slot has accumulated too much dust due to long use, or even Cause poor contact? Are there any signs of burning or cracking on the chip on the graphics card? When the screen is black due to the graphics card, there will be one short and four long "beep" sounds during the computer's power-on self-check. When installing a graphics card, hold the upper part of the graphics card with your hands and insert it into the slot evenly so that the fixing screws of the graphics card match the screws of the main chassis. Do not forcefully fix the card when it is not inserted to avoid distortion of the graphics card. If it is confirmed that the installation is correct, you can remove the graphics card and wipe the pins with an alcohol cotton ball or install it in another slot. If it still doesn't work, try changing to a good graphics card.
5. Check whether other boards (including sound cards, decompression cards, video capture cards) are in good contact with the motherboard slots
Pay attention to check the hard disk data cable and power cable connection. Is the law correct? Replace the slots of other boards and clean the pins. This is something that many people tend to overlook. It is generally believed that a black screen on a computer is caused by a problem with the monitor and has nothing to do with other devices. In fact, due to incorrect installation of sound cards and other equipment, system initialization is difficult to complete. In particular, if the data cable and power cable of the hard disk are plugged in incorrectly, it is easy to cause a no-display failure.
6. Check whether the contact between the memory module and the motherboard is good, and whether the quality of the memory module is of high quality.
Reinsert and unplug the memory module, or replace it with a new one. If there is a problem with the memory module, there will be four consecutive beeps when the computer starts.
7. Check whether the contact between the CPU and the motherboard is good.
Due to movement or other factors, the CPU has poor contact with the Slot 1 socket or Socket 7 socket. Press the CPU with your hand or remove the CPU and reinstall it. Since the CPU is a large heat-generating part of the host, Socket 7 type may cause the motherboard to bend and deform. The motherboard can be flattened on the bottom of the CPU socket motherboard.
8. Check whether the bus frequency, system frequency, and DIMM jumpers of the motherboard are correct
Check each jumper one by one according to the motherboard manual, in the order of "System frequency jumper - CPU "Cost frequency jumper - DIMM frequency jumper", be careful when setting the CPU voltage jumper, it should not be set too high. This step is very useful for some assembly machines or users who like to overclock.
9. Check parameter settings
Check whether the CMOS parameter settings are correct and whether the system software settings are correct. Check whether the compatibility between the graphics card and the motherboard is good. It is best to check the information and set it up.
10. Check whether the environmental factors are normal
Whether the voltage is unstable or the temperature is too high, in addition to checking according to the above steps, you can also quickly locate it based on the working condition of the computer. For example, after turning on the power of the host, you can hear that the computer self-test is completed. If the hard disk indicator light keeps flashing, you should check in steps two to four.
If the monitor displays content during computer startup, but a black screen appears after loading the XP screen, this is just a problem with the XP system software. The above inspection method is based on the fact that the monitor itself has no electrical The fault is that after turning on the power of the host, the power indicator light of the monitor changes from green to yellow but the monitor screen is black and no image is displayed. If the monitor still has no display after following the above steps, you should ask a professional to repair it.
2. The computer display always freezes after not being used for a long time
There are generally several reasons for a black screen: (1) The display is powered off, or the display data cable is in poor contact.
In addition, if the computer is used for a long time, the monitor power cord is prone to oxidation and damage; (2) The motherboard CMOS battery is out of power; (3) The graphics card has poor contact or damage; (4) The CPU has poor contact or damage; (5) The memory module is in poor contact or damaged; (6) The machine is infected with the CIH virus, and the BIOS is destructively refreshed; (7) Check plugging and unplugging, and if necessary, use an eraser to remove the oxide film on the gold finger; (8) If the floppy drive has a floppy disk, many Sometimes, when the computer is turned on or restarted, a black screen will appear on the computer and the system cannot be entered. To avoid this situation, you can also cancel the floppy disk startup item in the BIOS.
If you connect the host to someone else's monitor, you can test whether it is a problem with your monitor. If so, it can be solved like this. First use another monitor to adjust your refresh rate to the lowest, and then try to Plus! Right-click the screen--Properties--Advanced--Monitor--Refresh frequency. Remember, adjust from the lowest to upwards.
3. How to set the computer screen not to automatically black out
If the computer screen does not automatically black out, that is, the computer will not sleep
First, click the power icon in the lower right corner of the computer, and then Click "More power options"
In the pop-up window, click "Change plan settings"
In Put the computer to sleep, select the time to enter automatic sleep. If you want to You can select "Never" and click Save changes. (You can set different times when on battery and when plugged in.) Click "Choose what to do when the lid is closed" and select "Take no action" for "When the lid is closed." This way you will be fine in the future
Computer standby means that the computer is in an intermediate state between energy saving and system dependence. When the CPU on the computer is idle and is not set to run within the specified actual time, it will automatically enter the standby state. Here I will take the win7 system as an example. Then the specific steps to set the time are as follows:
Step 1. Click the Start menu on the taskbar, find the "Control Panel" option, then open the Control Panel, and find the "Power Options" button in the Control Panel .
Step 2. Double-click "Power Options" to open the settings window of the power options, and then click to select the "Change computer sleep time" option.
Step 3. Finally, set the specific time for "turning off the monitor" and "putting the computer to sleep" in the settings of the change plan. The time set here is up to the user to set at will. After the settings are completed, click "Save Changes" to complete the computer standby time setting operation.
4. What to do if the computer screen keeps going black
ALT+F4 patent, it is shameful to copy other people’s content. The reasons for the black screen are generally as follows: 1. The system file is damaged or cannot be found 2. Driver or driver There is a problem with the file (more likely with the motherboard or graphics card) 3. How many strips of memory do you have: if there is only one strip, then it can be ruled out as a memory problem; if there are two or more strips and they are of different brands, please use them first Run one of them alone (larger than 128M), see if there will be any problems, and then replace the other memory. If the problem occurs, it can be determined that the problem is with one of them. If the problem occurs no matter which memory it is, it is recommended to reinstall the system. .
4. The computer monitor is the window of the computer. If there is something wrong with it, the computer cannot be used.
5. Why does the computer screen go black and become unusable after being not used for a long time?
Are you using WIN7 system? If you go into Control Panel, click Hardware and Sound, then click Change computer sleep time in Power Options.
Click Change Advanced Power Settings and check whether this option is selected.