The first start of the computer is important. The computer does not turn on when turned on, consider why the computer does not turn on after assembly

Good afternoon friends! Recently, many users prefer to build a computer themselves. This is both educational and cheaper than buying a computer in a finished assembly. Moreover, you yourself choose which boards you need. Some people order assembly from private specialists.

With such an assembly, there are frequent cases when the question is why the computer does not turn on? We can give ourselves the answer - the reasons have not been identified. Just as often, the computer does not turn on when assembled by a computer store. Many people face this kind of problem. This article will not be enough to cover all these problems, but the recommendations given here will provide you with the first, and maybe the main help in solving this problem. Now let's take a look at our next steps. Why does the computer not turn on - the reasons for the failure?

The computer does not turn on when turned on what to do

The first tip is the accuracy of your actions during assembly. After assembly, carefully check everything, inspect. After all, you collect it for yourself, and not for someone else's uncle. Also, during assembly, you should not rush, so as not to accidentally burn any element of the computer. Or God forbid the whole computer.

From practice, it has been revealed that these problems are less likely to occur for those who check everything done at once. Check yours, see if there are chips on it, if it sits tightly on the socket. Before installing the cooler, be sure to apply heat-insulating paste. To do this, one drop in the middle of the processor is enough. Check the quality of the cooler to the processor (especially if the cooler model is non-standard). This is one of the main PC diseases in which the computer does not turn on - we will continue to consider the reasons. This check must be done not only upon completion of the assembly, but also during the assembly, after the installation of individual nodes.

Now let's assume your computer is assembled. You press the power button and you get nothing. PC is silent. What happened? Let's think. Why won't your computer turn on? There may be several reasons.

Causes of failure when turning on the computer

The most unpleasant option, the PC does not want to turn on at all. Fans do not make noise, PC Speaker does not emit a peculiar squeak and so on. The worst option is if some of the computer elements are dead. Of these, the worst is if the motherboard, processor or power supply does not work. A non-working motherboard is the worst. But to diagnose in such cases is quite simple.

First of all, in this case, we need to remove the cover of the system unit and make sure that power is supplied to the system board? It is quite easy to check this, if the motherboard has a special LED, it lights up even when the Power button is not pressed. The essence of this LED is a signal that power is supplied to the motherboard.

The problem is that every motherboard has such an LED. In this case, there will be more fuss. But we will assume that you have it and do not glow. Of course, it can burn out, but this is rare. There is only one conclusion: - your system board does not receive power and that is why the computer does not turn on.

Why might this be happening

Only if your power supply is broken, or it has a marriage. Also, this will happen when the power supply is overloaded. Overloading occurs when the power of the power supply and the power consumption required for all elements of the computer do not match. Therefore, as I mentioned in the article, the power supply must be taken with a margin of 10% of the energy consumed by all computer nodes.

Also in this case, be sure to check if the toggle switch (additional power button) is turned on on it. Such cases happen when the computer does not turn on when turned on, the owners carry out repairs, and the additional power button is simply turned off.

Andrey Zimin December 19, 2013

An anecdote in every article.

So you have purchased new computer and ready to start working. When all the components of the computer are nearby, not connected to each other, a bunch of different wires around, it may seem that you cannot cope with this task. In fact, there is no reason to panic. The first launch of the computer will take place according to plan.

In most cases, a small manual for connecting it comes with the computer. But, even if there is no such instruction, you can still put everything together yourself in just a few simple steps.

Preparing to Start Your Laptop

If you bought laptop or netbook, then the preparation procedure before the first launch will take less than a minute. On some models, you may need to connect the battery. Once the battery is in place, open the cover and press the power button. If the battery is not charged, you will need to connect AC adapter that comes with the laptop. While charging, you can continue to work.

If you want to connect to a laptop peripherals, you can read the instructions below, for desktop and laptop computers, as a rule, use the same types of connections.

Preparing to launch a desktop computer

Step 1

Unpack monitor, system unit, keyboard and other computer components out of the box. Remove all transport, plastic covers or protective film. Install the monitor and the system unit on the workplace.

Installation Recommendations: place the system unit so that there is enough space for air circulation to avoid overheating. It is best to position the monitor so that the light source is located to the left of the monitor to avoid glare.

Step 2

Take monitor connection cable. The monitor is always supplied with two cables, one for connecting to the mains, the other for connecting to a computer (system unit). Depending on the monitor model, the kit may include a VGA, DVI or HDMI cable. VGA cable often have blue coloron chips connectors to make them easier to identify. If you bought monoblock, you can go to Step 4.

Step 3

Connect one end of the cable to monitor, you can't go wrong with the choice of port, and the other end to the same port on the back of the system unit. Be careful and careful, the connectors and jacks of the ports are geometric in shape, with the correct connection, no effort is required. If your cable has screws, tighten them lightly to secure the contact.

Advice: if the cable does not "go", do not shove it, or you may damage the connectors. Make sure the connector on the cable matches the connector on your computer, and then connect it.

Step 4

Take keyboard USB PS/2(round purple connector).

If using a USB connector, plug it into any of the USB ports on the back of your computer. If you are using a PS/2 connector, connect it to purple

Step 5

Take mouse and determine which connector it connects to the computer. It could be USB(rectangular connector in white or black) or PS/2(round green connector). If your mouse has a USB connector, plug it into any of the free USB ports on the back of your computer. If you are using a PS/2 connector, connect it to green round port on the back of the computer.

If your keyboard has USB port, you can connect the mouse to the keyboard instead of connecting directly to the computer. Or you can connect a USB flashlight to this port to illuminate the keyboard and desktop. And also the presence of a USB port is convenient when connecting a "flash drive", you do not need to look for a connector on the computer, everything is at hand.

If you have wireless mouse or keyboard, you may need to connect Bluetooth adapter(USB adapter), it comes with the wireless device.

Step 6

if you have speakers or headphones, you can connect them to your computer in audio port(on the front or rear panel of the system unit). These ports have different colors, as well as plugs for connection. speakers or headphones connect to green port, microphone connects to pink (red) port. You can't go wrong with the color of the plug. Blue port to be used with other types of devices.

Some speakers, headphones and microphones have USB connectors instead of the usual audio jack. They can be connected to any USB port. In addition, some monitors have built-in speakers and a microphone, they will also need to be connected to the system unit. For this, the same colored connectors are used.

Step 7

take two power cable supplied with the computer and monitor. Connect the first power cable to the socket on the rear panel system block, then in network filter. Then, using another cable, connect monitor To network filter.

Step 8

Finally connect network filter into an outlet. You may also need to enable network filter it has a power switch.

What are the main reasons why the computer may not turn on? This question is asked by many users and novice collectors. In this article, we will try to give a number of recommendations on how to solve this problem on our own.

So, let's begin. You have assembled a computer or may have upgraded it on your own and this exciting moment has come - the monitor, mouse, keyboard, acoustics are connected, the power cord is also connected, this is important) you press the button and .... nothing. A minute pause, you are a little surprised and puzzled, this feeling is familiar to us, because we have assembled a lot of system units, expensive and very expensive, gaming, office, home, and unfortunately, it happened that our computer assemblies also refused to start the first time.

We start diagnostics

1. The first of the possible options: after pressing the button, nothing happens, the signal LEDs do not light up and the fans in the system do not rotate. We check the connection of the start button, whether it is connected to the motherboard correctly, immediately we diagnose it, remove the connector from the mother and close the two contacts with any conductive object, for example, a screwdriver, the computer starts up, great, we identified the faulty node.
2. The second option: go ahead, visually check the connection of the motherboard power connectors and the processor power (4-x or 8-pin terminal coming from the power supply), if everything is in order, you can remove the BIOS power battery for 5 minutes as a preventive measure, (sometimes, but very rarely helps) try to run.
3. Option three: disconnect all peripheral devices from the motherboard, leave only the processor, processor cooling and power supply (for absolute certainty, it is better to unscrew the motherboard from the system unit) and try to start the system again, if the treasured light on the motherboard blinked or the speaker squeaked, the fans came to life , then we are looking for a malfunction by connecting the nodes in turn (RAM, video card, hard drive, CD reader, sound card, etc.)
4. The fourth way: if nothing helps and we do not have a spare power supply, we diagnose ours. We disconnect the unit from the motherboard and all devices, connect the power cord, and close two contacts on the large 24-pin connector to which green and black wires are suitable. If, after our manipulations, the fan of the unit starts to rotate, then it is likely that there is a malfunction in the motherboard or a leg on the processor is bent (in the case of AMD). If you have Intel, then look carefully at the contact block on the motherboard socket, damaged contacts are very clearly visible.
5. Fifth case: the assembled PC starts up, but unfortunately, we see a black screen (the computer is running, but there is no image on the monitor). First of all, reset the Bios jumper on the motherboard (set the factory settings) and try to start. If the result is the same, then in this case, in the first place, the RAM module or video card may be the culprit. This can be determined by sound signals at startup or if the motherboard is equipped with a post code reader. If you are using two memory modules, then turn on each one in turn, and the video card can be checked by removing it and connecting using the integrated video card. If these nodes are in order, then alternately connect other devices and identify the faulty node. Yes, we completely forgot, if you connect the monitor signal cable to the integrated video card connector and at the same time you have a discrete video card (external) installed, then you will not get an image on the screen.

Now about the main thing.

Assembling a computer is not a very difficult and sometimes interesting business. The main thing to remember a couple of simple rules. Do everything very carefully and take your time, follow the instructions if they are, but if you are not confident in your abilities, we strongly recommend that you turn to professionals, at least for advice. And everything will work out. Online computer store "Edelweiss" is engaged in the assembly and sale of expensive gaming system units. And therefore, having accumulated vast experience in this area, they are always ready to give advice to potential customers and not only suggest how to properly assemble the system unit, but also diagnose a malfunction.

When you turn on the computer for the first time, if meaningful messages appear on the monitor screen, the first thing to do is to configure the BIOS. To enter the setup menu at the beginning of the PC boot, you must press the key (). On some motherboards manufactured by Intel, the CMOS Setup program for BIOS settings is not accessed by pressing the , and the key . If your motherboard has an AM1 BIOS installed, then the computer itself will prompt you to enter the CMOS Setup program by pressing the key , and make the necessary settings.

Attention!

Due to the advent of multi-core processors and the widespread use of RAID controllers, new BIOS versions have introduced new functions that, although they do not change the general principles of BIOS setup, require additional operations when working with the CMOS Setup program.

Note In principle, modern CMOS Setup programs are quite "smart" and correctly automatically configure the parameters of the motherboard, processor, memory and other peripherals, but it's better to check for yourself what really happened. If you have experience with CMOS Setup, you can even improve system performance by optimizing parameter settings.

Most CMOS Setup programs have the same or very similar menu windows for configuring BIOS settings. On fig. Figure 26.1 shows the first window of Award's CMOS Setup menu.

Rice. 26.1. Award CMOS Setup main menu

Since you have turned on the newly assembled computer, it is recommended to check the operation of key components. First of all, be sure to check the processor temperature by entering the PC Health Status menu (Fig. 26.2).

Rice. 26.2. PC Health Status Menu

The Current CPU Temperature line shows the CPU temperature in real time. If mistakes were made when installing the cooler on the processor, then the temperature of the processor will rise quickly.

Ideally, it should not rise very quickly to a value of no more than 30-35 NS and freeze at this mark. If your processor starts to heat up very quickly and does not stop at a temperature of 40 NS, then this means that the cooler is probably installed incorrectly (it is believed that the temperature in the room does not exceed 25 NS).

This menu configures the current date and time, as well as the presence of an FDD floppy disk drive and IDE devices - hard drives and CD drives. Most modern BIOSes automatically (automatically) configure these settings correctly, but you should check the setting and make adjustments if necessary.

Note In fact, the IDE interface is now outlawed. Therefore, on most motherboards, the CMOS Setup program for setting BIOS parameters shows SATA hard drives in the first place, and you still need to look for the settings of old devices with an IDE interface. True, in the latest versions of the CMOS Setup program, the SATA hard drive setting is integrated into the submenu with the YuE hard drive setting, that is, in each case, the user will have to rack their brains a little to find out what and where is configured. Fine-tuning the IDE and SATA interfaces is usually done in the Integrated Peripherals menu.

Rice. 26.3. Menu Standard CMOS Features

If there is no information about any IDE device, then it may either not be connected, or there is a conflict between two devices located on the same loop (the first device must work in Master mode, and the second - Slave). Note that devices with a SATA interface do not conflict, since their addressing is determined only by the physical location of the connection, so the problem of invisibility will either indicate incorrect connection or problems with the installation of RAID devices.

At the next stage, we configure the parameters in the Advanced BIOS Features menu (Fig. 26.4). Here you only need to configure the order in which the operating system is loaded from various disk drives, and these are the First Boot Device and Second Boot Device lines.

In the vast majority of cases, Windows 98/ME, Windows 2000/XP or Windows Vista operating system is installed on the computer. Since they are installed on a personal computer from bootable CDs, it is desirable that the CD drive be the first device, and the HDD-O hard drive the second. Then the computer will first try to boot from the CD, and if the CD or DVD drive is empty or the CD is not bootable, then the computer will boot from the hard drive.

Rice. 26.4. Advanced BIOS Features Menu

Rice. 26.5. Menu MB Intelligent Tweaker (M.I.T.)

The last vital stage is setting the frequency of the system bus and the memory bus. To do this, the Frequency / Voltage Control menu opens (on different motherboards, this menu item may be called differently, for example, in Fig. 26.5 it is called MB Intelligent Tweaker (M.I.T.)).

To correctly configure this menu, you need to know the technical characteristics of the processor and memory modules. The bus frequency (CPU Clock) is usually indicated on the packaging of the processor and memory modules. Otherwise, consult the salesperson at the computer store. The processor frequency multiplier may not be changed at first, because the BIOS sets the option that was selected for the processor at the factory, and a number of processors sold may have a locked multiplier.

Note Overclocking is usually an increase in the processor core frequency multiplier and an increase in the system bus frequency, which implies that the core voltage will also be increased. This should be done very carefully, controlling the stability of the system with the help of test programs. In particular, a number of BIOSes allow you to overclock the processor directly from Windows using special utilities.

The BIOS contains several dozen more settings that are not so important for most users and are changed only in special cases, because by default they have the most optimal and safe values. Accordingly, you can complete the BIOS setup, limiting yourself to the settings already made.

After you exit the BIOS setup program, the computer restarts. If there is a bootable floppy disk or CD in any drive, then the start prompt of the operating system installation program will appear on the monitor screen.

Attention!

Randomly changing any parameters in the BIOS is the right way to the situation when only a specialist can start the computer. In some cases, erroneous user actions can lead to failure of computer components.