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As soon as the motherboard is powered, the battery on the motherboard is removed, and then the positive and negative poles are short-circuited with metal, and then the battery is installed and the BIOS is set again.
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Isn't it just that it doesn't show up when it starts.,Abnormal shutdown will cause this situation.,Restart next time you don't show up.,Turn on and then press F8.,The menu appears to select the correct configuration for the last time.。 That's it.
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It may be that the memory module is loose, open the case and wipe the memory module clean, and then install it.
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It's detailed enough, whether it's a desktop or a pen computer, it's not accurate to find a repair computer, the general motherboard doesn't have problems, the power box is prone to problems, and then there is a problem with the CPU fan.
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There is a physical bad sector in the system area of the hard disk.
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If the screen doesn't respond after the computer is turned on, it could be due to the following reasons:
1.The monitor is not powered on or the power cord is not plugged in.
2.The monitor cable is loose or poorly connected.
3.Faulty graphics card or corrupted drivers.
4.The memory module is loose or damaged.
5.CPU failure or poor heat dissipation.
6.Motherboard failure.
Workaround:1Check that the power to the monitor is turned on and the power cord is plugged in.
2.Check whether the cable of the retarder is loose or poorly connected, and plug it back in.
3.If it's a faulty graphics card or corrupted driver, you can try reinstalling the graphics driver or replacing the graphics card.
4.If the memory module is loose or damaged, you can reinsert it or replace it.
5.If it is a CPU failure or poor heat dissipation, you can check if the CPU heatsink is working properly, and you can replace the heatsink if needed.
6.If the main bridge board is faulty, the motherboard needs to be replaced.
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1. Whether the computer monitor and the host are normally connected to the power supply, whether the power-on indicator of the power supply is on, the power indicator is not lit when the display is not powered on or the power-on power indicator is on but there is no signal or the screen shows "nosighal" 2.
Suggested Treatment:
1. Try to replace the computer screen cable or screen, sometimes the screen cable and screen are not too seriously damaged, and they can be repaired directly.
2. Check if it is a problem with the graphics card, if it is caused by the graphics card, you can take off the graphics card first, then find the eraser, gently wipe the metal part of the graphics card with the eraser, after wiping, clean up the slot, after the cleaning is completed, reinsert the graphics card, and then restart the computer should be fine.
3. Check whether the line between the computer screen and the computer host is loose, if not, it is a problem with the wire itself, and it is enough to change the wire.
4. If the computer host can be displayed when connected to other monitors, and then the local monitor is connected to other normal hosts and still cannot be displayed, it means that the computer monitor is damaged and needs to be repaired professionally.
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If the screen doesn't respond after the computer is turned on, it may be due to the following reasons:
1.The monitor is not powered on or the power cord is not plugged in.
2.The monitor signal cable is not plugged in properly or the signal cable is damaged.
3.The graphics card is faulty or not plugged in.
4.The memory module is not plugged in or is faulty.
5.The CPU is faulty or not plugged in.
6.Motherboard failure.
7.Power failure.
Workaround:1Check that the power to the monitor is turned on and the power cord is plugged in.
2.Check whether the signal cable of the display is plugged in properly and whether the signal cable is damaged.
3.Check that the graphics card is plugged in properly and that you need to replace it.
4.Check whether the memory module is plugged in properly and whether it needs to be replaced.
5.Check whether the CPU is plugged in properly and whether the CPU needs to be replaced.
6.Check whether the motherboard is faulty, whether it is a hail and whether the motherboard needs to be replaced.
7.Check if the power supply is faulty and if the power supply needs to be replaced.
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The screen doesn't respond after the computer is turned on?
1. First of all, it may be that the connection line between the computer and the host is abnormal, this is the connection line, if the phenomenon of poor contact occurs, this situation will occur. 2. It may also be because the screen saver function is set, so even if the computer is turned on at this time, but after starting the screensaver after a while, this situation will also occur. 3. Check whether the plug of the connecting cable is loose or caused by a problem with the plug.
Suggested workaround:
1. If there is an abnormality in the connection cable between the computer and the host, it is possible to replace the connection cable to solve the problem.
2. When the screen saver function is set on the computer, if the plane occurs for a long time, then adjust the screen saver setting time slightly shorter after the screen appears.
3. If the plug of the connecting wire of the computer is loose, or when there is a problem with the plug, the connecting wire can be replaced to avoid using the plug with poor contact again, so as to avoid leakage, which will affect the use effect of the computer, which will lead to damage to some hardware of the computer.
4. If the computer hardware fails, the computer hardware can be replaced, and it will be safer to contact professional maintenance personnel to replace it.
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The first reason may be that there is too much ash on the memory module, which is often referred to as the gold finger, in this case, there is no way to power on normally, so it will cause the display screen to not respond.
In this case, you can choose to replace the excess memory module, on the premise of ensuring that the power is connected normally, replace the old memory module, and replace it with a new one for boot test to rule it out.
If the computer is in a humid environment, the dust on the memory module will become a carrier of moisture, which may lead to a direct short circuit in the memory. Therefore, we recommend cleaning the memory module regularly, but not too often, usually once every six months is enough.
Therefore, it is very important to store the memory modules and clean them regularly. You also need to pay attention to the ways and means when cleaning the memory module, you can't wipe it with ordinary methods, it is easy to cause damage, and you can use a hair dryer or a leather tiger to blow the dust. The cleaning of memory modules needs to pay special attention to static electricity, especially in winter, the human body has more static electricity, it is easy not to touch the memory module, if you must touch the memory module with your hands, it is recommended to wash your hands before contact, wipe clean, this method can be very effective in discharging static electricity.
This is most likely a problem with the graphics card, and of course it is not ruled out that it is a memory problem. First of all, you check whether the memory is loose, and you can tighten the memory to see. If it's still my law to start. >>>More
Is it a new machine or was it once in working order? If it is a new installation, see if your jumper has jumped wrong, if it has been used normally before, now it is not possible, it is recommended that the system is the smallest method, unplug all the wiring, except for the power supply connected to the motherboard, unplug everything such as the memory graphics card, as long as the motherboard and CPU, and then short the switch, see if there is a response. If not, the motherboard will be scrapped.
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Friends who often use computers should encounter this situation, after pressing the power button when turning on, the computer does not respond, and the monitor does not light up. Remove those foolish fault causes, such as the power supply of the monitor and host is not plugged in properly; In addition to the signal interface between the monitor and the motherboard, the common fault causes are as follows. >>>More