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Hehe, our company's new employees have also made such mistakes.
Don't worry, it's fine. It could be that the repairman who repaired your computer unplugged the jumper from your computer and forgot to plug it in for you. I'm just going to give you an opening key.
You can take a look at the manual for yourself and plug it in, but the power light switch is divided into plus and minus levels, and the hard disk light is also divided into plus and minus levels, don't plug it in the other way.
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See if the thread is off.
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Either the restart button is broken, or the jumper of the restart button is loose.
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The reset line is off.
In fact, it doesn't matter if it's plugged in or not.
The new chassis now doesn't have a reboot button.
If it freezes or something, press and hold the power button for 5 seconds and it will turn off.
There's no need to take the hassle.
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It should be that the cable plugged into the motherboard has fallen off.
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Dizzy can only be repaired in the open case, who repaired it for you, find him, ask him why, let him fix it!
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It may be that the contact is not good on whether the wire of the button is plugged in well on the motherboard.
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He should not have plugged in other cables, you can open the case to see, there should be no connected panel cables in the case, such as the head of the indicator light, which is generally written with the word LED, and connect it to the corresponding pins of the motherboard, which is also written with LED, and it is best not to connect it yourself.
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It's your connection that isn't connected. Otherwise, the lights wouldn't have turned on. Go to him. Let him rebuild it for you.
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Change the phase. Never.
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Check whether the cable of the button is plugged in on the motherboard, if it is plugged in and it is not easy to use, the wire may be burned.
It is estimated that the machine was not plugged in after repair.
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How to troubleshoot the computer boot without display. (No alarm sound).
Step 1: First of all, check whether the external wiring of the computer is connected, and plug in each cable again to see if the fault is eliminated.
Step 2: If the fault persists, then open the main chassis to check whether there is any excess metal in the chassis, or a short circuit caused by the deformation of the motherboard, and smell whether there is a burning paste in the chassis, whether there are burned chips on the motherboard, and whether the capacitors around the CPU are damaged.
Step 3: If not, then clean the dust off the motherboard and check if the computer is in good condition.
Step 4: If the fault persists, unplug the reset cable on the motherboard and connect it with other switches and indicator lights, and then use the change cone short-circuit switch to see if it can turn on.
Step 5: If you can't turn on the computer, then use the minimum system method, unplug the data cable of the hard disk, floppy drive, and optical drive, and then check whether the computer can be turned on. Then connect the above devices to the computer one by one, when connecting a certain device, the fault will recur, indicating that the fault is caused by this device, and finally focus on checking this device.
Step 6: If the fault persists, the fault may be caused by devices such as memory, graphics card, CPU, motherboard, etc. Then, use the plug-in method, swap method and other methods to check whether the memory, graphics card, CPU and other devices are normal, and replace the damaged devices if there are damaged devices.
Step 7: If the memory, graphics card, CPU and other devices are normal, then discharge the BIOS, use the isolation method, place the motherboard outside the chassis, connect the memory, graphics card, CPU, etc. for testing, if the computer can be displayed, then install the motherboard into the chassis for testing until the cause of the fault is found. If the fault persists, you need to return the motherboard to the manufacturer for repair.
Step 8: When the computer is turned on without display but there is an alarm sound, when the computer is booted up, the system BIOS starts to POST (power-on self-test), when it detects a fatal error in a device in the computer, it will control the speaker to send out a sound to report the error. Therefore, there may be a fault that the power is turned on without displaying an alarm sound.
If the computer is turned on and there is no alarm sound, the fault can be checked according to the meaning of the BIOS alarm sound to check the faulty device to eliminate the fault.
Discharge the BIOS battery (restore the BIOS factory defaults) It is recommended to plug and unplug the graphics card and memory, clean it up, and polish the gold finger of the graphics card and memory.
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The switch is broken. I don't know what model the motherboard and CPU are, it won't be the chassis and power supply of the 486 era.
If the motherboard's power supply is started by a short circuit in the SW pins, you can use the switch of the restart recovery button, which is the same as the soft switch principle you mentioned.
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There are many reasons for your problem, it may be a problem with the switch, or it may be a problem with the power supply inside. It's really hard to say, if you don't know how to speak, take it to Hugh, so as not to break something else.
I can help you solve the problem of electrification, that is, there is static electricity in the winter dry, you can find a thin wire with a screw at one end, and one end is tied to the top of the chassis, the screw head must touch the ground, if you are afraid of not looking good, put it behind, this is how I solved it. My computer is rebooting with static electricity.
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It may be a problem with the power button, and your case is not grounded, and the power supply may be leaking, so it is best to be grounded.
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It may be that there is a problem with the shrapnel, or it may be that the front power cord is in poor contact.
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There are two buttons on the chassis panel, one is the power button, the other is the hot start button, if the power button is broken, transfer it to the hole grip of the hot start button, and it can be turned on.
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If it's broken, go out and change it.,It won't take long.,You don't need to press it to turn it on.,But there's a branch to sell some complicated.,You find the connection line on the front panel of the host.,Follow to find the socket.,Find 1 pwoer's line.,Tear it off.,And then the book tan uses a screwdriver to touch the 2 teasing metal pillars and it's OK.。
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The hardware problem is estimated to be a minor problem with the motherboard, which does not affect the use of other functions!
If Zhengyou is telling that the machine often crashes, then you have to check the reason, and if the reinstallation system can't be solved, then find the hardware problem.
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Have you opened the chassis Maybe the wire is connected to the wrong one.
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