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?
general information
It also happens that there is power in the network, the motherboard signals its operation with its LED, but when you press the power button, nothing happens. The computer just won't turn on! What to do in this case? How to turn on the computer without the power button and preferably not in a very complicated way?
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.
Quick but difficult check
Initially, you need to check the performance of the power supply:
- To do this, you must first disconnect all connectors (from the video card, motherboard, hard drives, cooler, etc.).
- 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.
- 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.
Now you can connect the connectors back and solve the next problem.
How to start the computer?
So, we found out that 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.
Working with keyboard shortcuts
The keyboard is a part of the computer that is very much 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 for the successful use of this method, the keyboard must be connected not 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). It could be either Space Bar (space), or Power Key (the power button found 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 logged into the basic I / O system, 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.
Features of technical design
As one person said, only a Soviet-made cast-iron frying pan can be more reliable than the power button. And well, it should be noted that there is a significant amount of truth in these words. Therefore, if the computer power button does not work, then you can think about whether it is worth changing the piece of equipment? After all, this is one of the most basic elements of a PC, so when it fails, we can say that the operation literally rolls over. Or the equipment of clandestine production from China was bought. To prevent this from happening, you need to be careful when choosing a computer at the time of its purchase.
Safety
And now I want to go back a little and talk about safety. 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, always, even with the smallest cosmetic changes, it is 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 whose system unit is very difficult to completely disconnect from the power supply. 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.
Conclusion
So we figured out how to turn on the computer without the power button. But these were the most primitive ways of checking the status and activation. It should be noted that there are enough a large number of various auxiliary equipment with which you can restore and start literally dead electronics. But as a rule, experienced professionals who have been engaged in this business for quite a long time have it.
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 existing developments, and the replacement will be forgotten in a few days.
There can be many reasons for this behavior of our faithful assistant, but we will focus only on the most popular of them, due to which such a nuisance can most often occur.
So, when you press the power button, the computer shows absolutely no activity, that is, it does not turn on, the power supply is silent, and the indicators do not light up. First of all, it is advisable to check whether the power is connected to the computer, whether the power cord has been accidentally pulled out and whether it has failed. If you have a spare cord, try using that one. See if the power supply is turned off by the button located on the back of the unit itself. Sometimes you can accidentally turn off the power while dusting or moving the system unit to the side. Also check the power source, which is the socket. Although unlikely, there are still situations in which the cause is a banal lack of supply voltage. With normal voltage in the network, we go further.
The button may be faulty. power", which we turn on the computer. To check it, remove the front panel of the system unit and evaluate the external condition of the button and the wires suitable for it. If one of the wires breaks, you can simply solder it in place. It should be said that the power button very rarely breaks by itself, but you need to take into account this option.If no damage is found, then let's look inside the system unit.To remove suspicion from the power button, remove one of the side walls of the system unit case, disconnect the cable " Power SW"and try to close with a flat screwdriver two contacts on the motherboard, to which the wires (usually black and green) are suitable from the button" power". If, when the contacts are closed, the power supply starts working, then the reason lies in the faulty button.
Pay attention to the green LED located on the motherboard. When the power supply is turned on, this LED should glow, which indicates that voltage is supplied to the motherboard from the power supply. If the LED is off, it means that the power supply is not supplying power to the board and, therefore, the PSU is faulty.
But even if the LED is on, first of all, you need to suspect the power supply. It is the PSU that is 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 at the same time, then the cause has been found. If there is no possibility of replacement, then remove the power supply, disconnect all its cables, unscrew the cover and look inside the unit. The huge amount of dust that you see there could well have caused the combustion of one of the PSU elements. Inspect all electrolytes for swelling or leakage. If there are any, then act on the basis of how much you operate your power supply. If it 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, then he obviously needs to be replaced and repairs will only extend his life by a couple of months. Usually, new PSUs fail during power surges or while operating at maximum modes. Check the power supply cooler too. Perhaps it was because of his stop that the power supply failed.
If all the above diagnostic methods did not give a result and the computer still does not want to turn on, and the power supply does not make noise, then check all the cables for integrity and correct connection.
Computer won't turn on- this is one of the most frequent problems with which customers contact our service. This phrase can actually 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 causes failures in your computer and find a solution to the problem.
When you press the power button, the computer does not show signs of life.
If when you press the "power" button on system block, the power indicator does not light up, then, first of all, check all the cords and connections, see if the power cable is plugged into the outlet, if the key on the surge protector is on, if the toggle switch on the back of the system unit is in the “On” position.
If this does not help, 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 breaks in electrical circuits.
When you press the power button, the computer starts and the fans sound, but there is no image on the monitor
Check that the monitor cables are securely connected 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 breaks in electrical circuits.
If there is no visible damage, then with a high degree of probability your video card burned out. Substitute a known working video card and try again.
If this does not help, the cause of the malfunction lies in the motherboard or in the processor. Swap these two components in turn with known working ones. Remember that there are several types of processors and motherboards that are suitable for a particular processor.
When the power button is pressed, the computer starts and the screen lights up, but the operating system does not boot
There are several reasons for this behaviour:
- Hardware problems
- Violation of correct operation operating system
- Combined errors
We provide you with a correspondence table of the most common BIOS errors and signals.
CMOS BATTERY HAS FAILED.My battery is almost done. Replace battery.
CMOS CHECKSUM ERROR.
Incorrect CMOS checksum. Data in CMOS is corrupted. Perhaps the battery is dead. 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 floppy and check system files on the hard drive. You may have a non-system floppy in the drive, remove the floppy from the drive.
DISKETTE DRIVES OR TYPES MISMATCH ERROR - RUN SETUP.
The types of drives actually installed in the system and their descriptions in CMOS do not match. Start the BIOS and enter the correct drive type.
ERROR INITIALIZING HARD DRIVE CONTROLLER.
The hard drive controller is not initializing. Check controller installation and parameters hard drive specified in the BIOS. Also check the jumpers on the hard drive.
FLOPPY DISK CNTRLR ERROR OR NO CNTRLR PRESENT.
Unable to initialize floppy disk controller. Check the controller installation, and the drive settings specified in the BIOS.
KEYBOARD ERROR OR NO KEYBOARD PRESENT.
Unable to initialize keyboard. Check keyboard connection and type. As a last resort, disable keyboard control on boot.
Memory parity Error at XXXX.
Parity error. Replace memory.
MEMORY SIZE HAS CHANGED SINCE LAST BOOT.
The memory size has changed since the last boot. Enter 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 reload.
Attention! If you do not have sufficient qualifications, just contact the professionals. Our experts will be happy to help you solve any of your computer problems!
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 pop out of their sockets on the 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.