The reasons for this behavior of our faithful assistant may be many, but we will focus only on the most popular of them, because of which most often such a nuisance may arise.
So, when you press the power button, the computer does not show any activity, that is, it does not turn on, the power supply is silent, and the indicators do not light up. The first step is to check whether the power is connected to the computer, whether the power cord has accidentally pulled out and whether it has failed. If you have a spare cord, then try using it. See if the power supply is turned off with the button on the back of the unit itself. Sometimes it is possible to accidentally turn off the power while wiping dust or moving the system unit to the side. Also check the power source, which is the socket. Although unlikely, but still there are situations in which the cause is the banal lack of supply voltage. At normal voltage in the network we go further.
Perhaps the " Power", which we turn on the computer.For its verification, remove the front panel of the system unit and evaluate the external state of the button and wires suitable to it.In case of a breakage of one of the wires, you can simply solder it in place.It should be noted that the power button is very rarely broken in order to remove suspicions from the power button, remove one of the side walls of the chassis of the system unit, disconnect the " Power SW"and try to close a flat screwdriver with two pins on the motherboard, which are suitable wires (usually black and green) with the" Power"If the power supply is activated when the contacts are closed, the cause lies in the faulty button.
Pay attention to the green LED located on the motherboard. When the power is turned on, this LED should be on, indicating that the power supply to the motherboard is being supplied. If the LED does not light, then the power supply unit does not supply power to the board and consequently the power supply unit is defective.
But even if the LED is on, first of all, you need to suspect the power supply. It is the BP most often the cause of such a failure. Most the best way Check the power supply is to replace it with another unit. If the computer turns on, then the reason is found. If there is no possibility of replacement, remove the power supply, disconnect all its loops, unscrew the lid and look inside the unit. The huge amount of dust that you see there could well have caused the combustion of one of the elements of the BP. Examine all electrolytes for swelling or leakage. If any, then proceed based on how much you are using your power supply. If he is less than three years old, then there is a reason to repair it in the service. If he is four or more years old, he obviously requires replacement and repair only will prolong his life for a couple of months. Typically, new PSUs fail during power surges or during operation at maximum modes. Check and cooler power supply. Perhaps, it was because of his shutdown that the power supply failed.
If all the above methods of diagnosing the result were not given and the computer still does not want to be turned on, and the power supply does not make noise, then check all loops for integrity and correct connection.
Those who have computers for a long time often complain about some problems. One of them is the malfunction of the power button. Periodically, they refuse for good, and then the question becomes urgent: how to turn on the computer without the power button?
general information
It happens that the power is present in the network, the motherboard is signaled by its LED, but nothing happens when the power button is pressed. The computer simply does not turn on! What to do in this case? How to turn on the computer without the power button and preferably not very difficult way?
It should be noted that the reasons for this behavior of technology can be extremely great. Within the framework of the article, several of the most popular variants of failure and their elimination will be considered. Will be given those that can easily be repeated at home. If none of the below is available, then it would be better to contact the professionals so that they can solve the problem.
Fast, but complex verification
Initially, it is necessary to check the operation of the power supply:
- To do this, first unplug all connectors (from the video card, motherboard, hard disks, a cooler, etc.).
- It is necessary to close the two wires on the widest connector of those that are on the power supply. As a rule, it is green and the nearest black one. You can do this with a regular clip or tweezers.
- We supply voltage from the socket. And if the fans do not work, and everything is done right, then we can confidently say that the fault is in the power supply unit. If they are launched, then we can say that it is working.
Now you can connect the connectors back and solve the following problem.
How do I start the computer?
So, we found out that the problem is in the computer itself. What to do now? The motherboard has a lot of connectors, which connect the elements of the front panel of the computer case - buttons, LEDs, USB ports and other components. The connectors for the power button are usually located at the bottom right of the board. But the best way is to open the documentation for the used element and find out where it has contacts. If it is not there, you need to find the inscriptions: "Enable-Disable" on english language (Power Switch (PW Switch), Power ON, On-Off). After this, remove the connectors and gently close the PWR SW and Ground contacts. Than? Yes, even with a ballpoint pen.
Here's how to turn on the computer without the power button. And if after that everything works, then we know exactly what the problem is. It's in the on / off button itself. But what to do after clarifying this fact? Of course, repair or replace it. For a while, you can exit the situation by using the reset button, connecting it instead of the broken one. She, as a rule, signs Reset.
So in a simple way you can make the technique work. And if the power button is broken, you can recommend it as soon as possible to avoid this problem. But be careful - with inexperience or connivance the computer can be seriously damaged. Therefore, engage in a full-fledged repair only at your own risk. Benefit can be very long to use the reset button.
Working with keyboard shortcuts
The keyboard is part of the computer, which is very much underestimated. Perhaps, answering the question how to turn on the computer without the power button, it was necessary to start with this method, both simple and easy.
For this we have to work with the basic input / output system. True, not everything is so easy here. The fact is that for successful use this method The keyboard should not be connected to a USB port, but to a round PS / 2. If it is not so, then, alas, nothing will come out.
If the keyboard is what we need, then you need to set the setting (namely, select the items that correspond to the buttons that can turn on the computer using the keyboard). It can be either Space Bar, or Power Key (the power button available on the "extended" keyboards) or Ctrl-Esc. After that, you should save the settings and turn off the computer to try out this innovation.
How to find the necessary property? Once the entrance was made basic system I / O, go to the Power Management Setup section and change the On by Keyboard. And here is an illustration to the question of whether it is possible to turn on the computer without the power button.
Features of technical design
As one person said, the cast button is safer than the Soviet-made cast-iron frying pan. And well, it should be noted that there is a significant amount of truth in these words. Therefore, if the computer's power button does not work, then you can think about whether it's worth changing the unit of technology? After all, this is one of the most basic elements of a PC, so when it breaks down, we can say that the operation literally goes off scale. Or the technology of underground production from China was bought. That this did not happen, you need to be careful when choosing a computer during its purchase.
Safety precautions
And now I want to go back a bit and talk about safety. It should be noted that most of the elements of the computer work under a small voltage, which is a unit or even a fraction of the volts. But not everything is so simple - otherwise it would not be connected to the 220 V network. Therefore, always, even with the smallest cosmetic changes, it is necessary to completely disconnect the equipment from any power supply. Of course, this is quite labor-intensive, but remember that all the safety equipment is written by someone's blood.
Let's look at a small example of negligence. Here is a computer, in which the system unit is very difficult to disconnect from the power supply completely. It is put into sleep mode and the side panel is opened. And then an interrupt is triggered (for example, from a message that came through the network) and the technique is turned on. The current is unlikely to hit, but the fan on the motherboard can work well on the hands. Of course, he will not cut off his fingers, but he will be able to tangibly beat them with his blades.
Conclusion
Here we are and dismantled how to turn on the computer without the power button. But these were the most primitive ways to check the status and activation. It should be noted that there is a sufficiently large number of various auxiliary equipment, with which you can restore and run literally dead electronics. But it, as a rule, has experienced professionals who have been dealing with this matter for quite some time.
Although, as previously mentioned, with such a breakdown it is still better to think about replacing the system unit. After all, in this case, you can remove all the "insides" from it and rearrange it into a new one. And this will save all the available developments, and the replacement will be forgotten in a few days.
The computer does not turn on. What to do?
Kind time of the day, dear Internet users and visitors to my site!
In this article, we will look at computer malfunctions, and consider step by step instructions troubleshooting your computer. I work as a leading information technology engineer at a large enterprise in the city of Kazan for 5 years and have accumulated a lot of experience in terms of repair and maintenance of computers. The most common faults look like this:
When you press the "Power"On the system unit and does not give" signs of life ".
A) It is necessary to check whether the 220V power is suitable for the computer (the system unit).
The most important enemy for computer equipment is the cleaning lady. At least at the enterprise, based on the above, the power cable from the power supply of the system unit can be banal. It looks something like this:
Reconnect the power cord.
Well, on the other hand, the fork flew completely, including:
Check the position of the power button. Should be in position "1":
B) Maybe the cleaning lady is not to blame and the problem is in the "iron"
1) Open the cover of the system unit. As a rule, for this you need to disconnect all connected wires to the system unit (power cable, keyboard, mouse, DVI, VGA, HDMI cable-depending on which monitor is connected, patchcord and additional .Periphery is available for anyone. And unscrew the 2 screws.
Examine the components of the system unit (motherboard, video card, etc.), Perhaps there are swollen capacitors, and evaluate the smell (perhaps there is a smell of "gari"). If there is, it's better. If all the norms are in sight and there is no smell, then we go further.
2) Connect the power cable to the computer power supply.
3) To see whether the LED (light bulb) on the motherboard is on. It should glow green mostly, but it all depends on the motherboard model, the LED may be red, for example.
If it is on, then the power is on, the possible malfunctions are the power supply, or the Power button itself is broken (does not work), or the post of its connection to the motherboard of the computer has gone.
It looks like this:
It is necessary to disconnect the "Power SW" postings and close the contacts with a screwdriver.
If the computer is working, it starts up, disconnects the power cord, connects the monitor, keyboard, mouse, connects the power, we close the contacts again, we check the computer's efficiency. If everything is normal, then the problem in the power button, you need to replace it or understand why it does not work. Sometimes the power button does not reach the mikrik. Usually I do not bother and change places connecting the wires "Power SW" and "Reset" in some places. As a result, everything works and now it's just the button "Reset" that answers the computer's activation, and the "Power" button for rebooting. Did not help? Go ahead. If the computer starts up, but there is no image, go ahead.
AT) Reconnect the power supply connector:
We try to start the computer. If the computer still does not turn on after the shaitan of manipulation, then in 95 percent of cases it is a malfunction of the power unit. It needs to be replaced. If there is someone to take and throw instead of the old, then it's wonderful, we try, if everything goes well we buy and change. If you do not have anything to check, you can buy it from the store, but in such a place where you can return it, as there may be a problem not in it. 5 percent of the cases I left on the malfunction of the motherboard, sometimes it happens, but rarely. You can still turn off one by one hDD, a video card (if you have an external one, for example GeForce GTX 1060), memory modules, it is possible, when you disconnect something from this list, the computer will start, it happens rarely of course this. On this I will not stop, if you have this case
D) If you already know for sure that the power supply unit is functional, then we change the motherboard. Only here you need to think about the feasibility of buying and replacing. First, if mat. the board is old, you can no longer find it on sale. Secondly, if you hire a specialist for a job, it can be expensive, and it may make sense to buy a new system unit. Since the specialist will take money to replace the mat. Boards, computer prevention, Windows installation, software installation and so on.
I hope my article helped you. If you have any questions, please write. All Respect and uvazhuha!
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The computer does not turn on - this is one of the most frequent problems with which customers turn to our service. Under this phrase, in fact, can mean a variety of problems caused by completely different problems, both in the hardware of the computer, and in software. Here we offer you the most typical symptoms by which you can try to determine what caused failures in your computer and find a solution to the problem.
When the power button is pressed, the computer does not show any signs of life.
If you press the power button on the system unit, the power indicator does not turn on, first check all cords and connections, see if the power cord is plugged in, if the key on the mains filter is lit, whether the switch is on the rear panel the system unit in the "Enabled" position.
If this does not work, then most likely you have problems with the power supply. Check the reliability of its connection to the motherboard, as well as conduct a visual analysis for mechanical damage and rupture of electrical circuits.
When the power button is pressed, the computer starts up and the sound of the fans is heard, but there is no image on the monitor
Check the connection of the monitor cables to the power supply and to the output of the video card.
If the connection is all right, then most likely you have problems with the video card. Check the reliability of its connection to the motherboard, as well as conduct a visual analysis for mechanical damage and rupture of electrical circuits.
If there is no visible damage, then the video card burned with a high probability. Replace the video card with a known working one and try again.
If this does not work, the cause of the problem lies in the motherboard or in the processor. Replace the known for the workers in turn these two components. Remember that there are several types of processors and motherboards, suitable for a particular processor.
When the power button is pressed, the computer starts up and the screen lights up, but the operating system does not boot
There are several reasons for this behavior:
- Hardware Problems
- Violation of correct work operating system
- Combined Errors
We give you the table of correspondence of the most common errors and signals of the BIOS.
CMOS BATTERY HAS FAILED.My battery is almost done. Replace the battery.
CMOS CHECKSUM ERROR.
Incorrect CMOS checksum. Data in CMOS is corrupted. The battery may be down. Check the battery and replace it if necessary.
DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER.
Not found boot disk. Boot from the system disk and verify system files on the hard disk. It is possible that a non-system diskette is inserted in the drive, remove the floppy disk from the drive.
DISKETTE DRIVES OR TYPES MISMATCH ERROR - RUN SETUP.
The types of drives actually installed in the system and their descriptions in the CMOS do not converge. Run the BIOS and enter the correct drive type.
ERROR INITIALIZING HARD DRIVE CONTROLLER.
The hard disk controller is not initialized. Check the controller installation, and the parameters hard drivespecified in the BIOS. Also check the sweaters on the hard drive.
FLOPPY DISK CNTRLR ERROR OR NO CNTRLR PRESENT.
The floppy disk controller can not be initialized. Check the controller installation, and the drive parameters specified in the BIOS.
KEYBOARD ERROR OR NO KEYBOARD PRESENT.
The keyboard can not be initialized. Check the keyboard connection and its type. As a last resort, disable keyboard control at boot time.
Memory parity Error at XXXX.
Parity check error. Replace the memory.
MEMORY SIZE HAS CHANGED SINCE LAST BOOT.
The memory size has changed since the last download. Enter the BIOS.
PRESS A KEY TO REBOOT.
The message occurs when errors are detected and a reboot is required. Press any button.
SYSTEM HALTED, (CTRL-ALT-DEL) TO REBOOT ....
Indicates that the download process has stopped. Press CTRL-ALT-DEL to reboot.
Attention!If you do not have sufficient qualifications, just contact the professionals. Our specialists will gladly help you solve any of your computer problems!
