The power button on the computer does not work. How to turn on the computer without the power button if it is broken

Recently, I began to often encounter a malfunction of the PC power button - power buttons. Previously, I did not betray her great importance and did not pay due attention. But in vain!

It happens that there is power in the network, the power supply, when the corresponding contacts of the connector are closed, starts up with a half turn and works fine. The motherboard signals with its LED the presence of standby voltage, but by pressing pwr buttons Nothing happens. Computer won't turn on!

Of course, there can be a great many reasons for this behavior, but still, you should pay attention to the PC power button!

What to do if the computer does not turn on?

1. It is necessary to check the performance of the power supply.

2. Start the PC bypassing the power button, which is located in the PC case.

How to check the power supply of a computer?

I answer. Express check of the computer power supply is carried out as follows:

1. Disconnect all power supply connectors from the computer (from the motherboard, from the video card, from all hard drives, coolers and so on).

2. Now you need to short two wires on the next connector. It is the widest of all that come out of the BP. You can short any black wire to a green wire. As a rule, I I close the green and near black(Earth). You can do this with a regular paper clip or tweezers.

If 220 volts is supplied to the power supply from the outlet, the wires are closed correctly, the power button on the PSU itself (there are such models) is turned on, and the fans of the power supply do not start, then a malfunction of the power supply can be stated. On the contrary, if, when closing the indicated contacts on the computer power supply connector, you saw that the fans inside the unit rotate, and not just twitch or are silent, then the power supply is working.

At the same time learned run computer block power supply without computer!

Many experienced craftsmen may object that such a check cannot accurately show the serviceability or malfunction of the PSU. And they will be partially right. But we do an express check, which in this case is quite enough. Moreover, not every user has a load stand or at least a multimeter to delve further.

After checking the power supply, we connect all the connectors back. And we solve the following problem.

How to start a computer without a button?

Each motherboard manufacturer may have a different pin arrangement. That's why the best option The search will open the documentation for your motherboard and find the location of these pins there. The documentation for the motherboard must come from the store, if you lost it or the seller did not give it to you (which happens very rarely), then the documentation for the motherboard can be downloaded on the Internet on the official website of the manufacturer, if you have access to the Internet!

If there is neither one nor the other, then we are looking for the inscriptions on the connectors. As a rule, they are signed with letters Power Switch (PW Switch), Power ON, On-Off, not to be confused with PWRLED.

Here are the typical pinouts of connectors from some manufacturers:

MSI Motherboard

Asrock motherboard

Asus motherboard

Motherboard Biostar

Epox motherboard

Gigabyte motherboard

Foxcon motherboard

Intel motherboard

We remove our connectors and carefully briefly close the contact PWR SW and Ground. The computer should start. What to close? Ballpoint pen!

If the computer starts up, then the conclusion is obvious: the power button is faulty. What to do in this case? Try reconnecting the button to the motherboard connector, there may have been a bad connection. If it doesn’t help, remove the button, and then, according to the circumstances, either repair the button or replace it.

To get out of this situation for a while, you can connect instead of the power button reset button(reboot) and use to enable it.

Thanks to such simple steps, you can start the computer without any problems, but this should not be neglected, and it is better to fix the start button on the case as soon as possible in order to avoid unnecessary problems.

Attention: Neither the author of this article, nor the administration of this site, bears any responsibility for possible problems that may occur during the process of turning on the computer in this way. You will perform all of the above actions at your own peril and risk, and will be solely responsible for possible problems that are not described in this article.

Therefore, if you do not have sufficient qualifications and knowledge, I recommend that you contact a specialist.

Updated - 2017-02-16

There are cases in which, after a while, the power button on the front panel of the computer does not work. It just falls into the inside of the case. I've been very "lucky" in this regard. Our organization purchased five such computers. And just a month later, the buttons began to fall inward.

The master was called. He came, looked, said that we were to blame, and left. To some extent I agree with him. No need to press the buttons with all the dope, and even better not to buy computers in such cases. Not only do the buttons fall out in them, they also rattle like a tin can in a frying pan.

The main thing is cheaper for the authorities, and the rest is your problems. So employees then sit at computers that heat up like stoves (especially nice in summer), rattle like tin cans, buzz like airplanes, and break down endlessly.

I had to give a damn about the warranty, and open the processor unit. Anyway, no one will change computers, and if they do something, it will probably be so that after a while they will again have to be taken for repair. If you have the same problem, then I can help you.

If your computer power button constantly sinks into the case, then it’s better to spend a couple of hours once and do everything as it should be, than to swear every time and spoil your nerves. Moreover, all you need for this is a screwdriver, pliers, and a piece of wire.

• Disconnect the power from the computer (it is better to unplug its cord from the outlet altogether).
• Disconnect all wires from the back of the processor case (power cable, monitor, mouse, keyboard, etc.). If in doubt that you will then connect everything correctly, then write down or sketch their location on paper.

In general, the first time it is better to write down or sketch everything. Don't rely on your memory. I know from my own experience that you will still be tormented by doubts whether everything is done correctly. So, better save your time and nerves.

• Now put the processor on the table. Remove all unnecessary so that it does not bother you. Close pets so that they do not jump, and God forbid, do not climb inside the block.
• , which is very detrimental to electronic parts.
• Take a Phillips screwdriver, unscrew the screws on the back to open the left and right sides of the case (there are cases with latches, but they don’t have such problems with buttons).

Just be careful not to unscrew the screws that attach to the case.

• Gently pull the wall towards you towards the unscrewed screws and remove it.
• Do the same with the second wall. Now find the screws (usually six of them, three on each side) that secure the front panel. They need to be unscrewed to get to the button.

• Remove the front panel cover. Take care that the wires coming from this panel do not come off, and do not jump out of their nests on motherboard. Better yet, before you open the panel, draw all the wire connections that go from this panel to the motherboard.

Now, if any wiring pops up, you can always connect it. In general, the connection diagram for all the wires is in the description for the motherboard, which should be given to you when buying a computer. You can also find a description of the motherboard on the Internet.

• After you have opened the front panel, find the failed button, insert it into place and screw it with some wire. I do this with an ordinary paper clip.

Today we will solve the problem "how to turn on the computer without a button." Those who have computers for a long time often complain about some problems. One of them is a malfunction of the power button. Periodically, they fail for good, and then the question becomes relevant: how to turn on the computer without the power button?

It should be noted that there can be an extremely large number of reasons for such behavior of technology. Within the framework of the article, several of the most popular options for failure and their elimination will be considered. Those that can be easily repeated at home will be given. If none of the below can help, then it would be better to turn to professionals so that they can fix the problem.

Health check

Initially, you need to check the performance of the power supply:

1. To do this, first disconnect all connectors (from the video card, motherboard, hard drives, cooler, etc.).
2. You need to short two wires on the widest connector of those that are on the power supply. As a rule, it is green and the nearest black. You can do this with a regular paper clip or tweezers.
3. We supply voltage from the outlet. And if the fans did not work, and everything was done correctly, then we can confidently say that the fault is in the power supply. If they start, then we can state that it is working.
4. Now you can connect the connectors back and solve the next problem.

How to start a computer?

So, the problem is in the computer itself. What to do now? The motherboard has many connectors to which the elements of the front panel of the computer case are connected - buttons, LEDs, USB ports and other components. The connectors for the power button are usually located on the bottom right side of the board. But it would be best to open the documentation for the element used and figure out where it has contacts. If it is not there, then you need to find the inscriptions: “Turn on-Off” on English language(Power Switch (PW Switch), Power ON, On-Off). After that, remove the connectors and carefully close the PWR SW and Ground contacts. How? Yes, even with a ballpoint pen. Here's how to turn on your 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 finding out this fact? Of course, repair or replace it. For a while, you can also get out of the situation with the help of the reset button, connecting it, instead of the broken one. It is usually signed Reset. In this simple way, you can make the technique work. And if the power button is broken, then we can recommend fixing it as soon as possible in order to avoid this problem. But be careful - with inexperience or connivance, the computer can be seriously damaged. Therefore, you should engage in a full repair only at your own peril and risk. Fortunately, you can use the reset button for a very long time.

Keyboard shortcuts

The keyboard is a part of the computer that is greatly underestimated. Perhaps, answering the question of how to turn on the computer without the power button, one should have started with this method, which is both simple and easy. To do this, we will have to work with the basic input / output system. True, everything is not so easy here. The fact is that in order to successfully use this method the keyboard should not be connected to a USB port, but to a round PS / 2. If this is not so, then, alas, nothing will work. 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). This can be either Space Bar (space), or Power Key (power button, available on "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 you have entered into basic system I / O, you should go to the Power Management Setup section and change On by Keyboard. And here we have an illustration to the question of whether it is possible to turn on the computer without the power button.

Safety

The most important thing in our life is the safety of our health! It should be noted that most computer elements operate at low voltage, which is units or even fractions of a volt. But not everything is so simple - because otherwise it would not be connected to a 220 V network. Therefore, even with the smallest cosmetic changes, it is always necessary to completely de-energize the equipment from any voltage supply. Of course, this is quite laborious, but remember that all safety precautions are written in someone's blood. Let's look at a small example of negligence. Here is a computer with system unit very difficult to disconnect from the power supply completely. It is put to sleep and the sidebar opens. And then an interrupt is triggered (for example, from a message that came over the network) and the equipment turns on. The current is unlikely to strike, but the fan on the motherboard can go hand in hand well. He, of course, will not cut off his fingers, but he will be able to noticeably beat them with his blades.

One of the cases from my practice prompted me to write this article. The system unit came in for repair, which absolutely did not respond to pressing any buttons ("On", "Reset"), resetting the BIOS.

The first suspicion fell on the power supply. Replacing it with a known good PSU did not give a positive result. Sequential replacement of removable components of the motherboard (memory, processor, video card), as well as shutdown hard drive and DVD did not change the situation.

It was decided to try to forcibly turn on the power supply by applying the "Common" potential to the PS-ON wire. A short touch was enough for the motherboard to start. After installing all the components, the operating system successfully loaded.

The conclusion is as follows - on the motherboard, the power supply startup circuit failed. Repair the motherboard without having circuit diagram and describing how it all works is almost impossible. On the other hand, changing the motherboard, and possibly other components installed on it, is quite an expensive pleasure.

To solve the problem with turning on, in such cases, you can switch the PC power button as shown in the figures.

You can not touch the existing button, but install an additional one. In this case, there is some advantage. When a situation arises that the computer freezes stupidly, not responding to anything, by pressing and holding for 4 seconds. The main button can more or less safely turn off the power. You cannot do this with an additional button, you can only turn it on. Additional button should be no lock!!!