How to proceed if you turn on your laptop with a black screen

If the laptop does not interact with you, there may be a number of reasons for this. When you turn on the laptop - a black screen, first of all, pay attention to the hardware part of it. For example, the power button does not close the electrical circuit, one or more microcontrollers on the motherboard went out of order, the capacitors were blown up, the unit or portable power source-the battery was defective.

It should be noted that not always these problems require specialist intervention. When you boot your laptop, a black screen may indicate a breakdown of both hardware and software. Whatever it was, you should clearly know what could be out of order.

How to recognize the problem and correct it in time

When you see a black screen when you start the laptop and there are no character stitches, it's possible that the battery does not supply its components. In this case, you need to put the battery on charge for an hour and a half.

In more serious situations, the battery may fail and not function at all. If this happens, you need to disconnect it carefully, removing the plastic latches, then plug the power directly. When removing the battery, first disconnect the laptop to avoid possible electric shock.

Also, the reverse situation may occur: the battery is stable and the power supply is out of order. To determine this, put the battery in charge. If the mains voltage is functioning normally, but the charge indicator is "silent", you need to check the light bulb.

To do this, remove the power supply from the laptop slot, and, without disconnecting the plug from the outlet, short the block connector and the cap of a small bulb for 3-5 watts. This action should be carried out with rubber gloves on hand . If the light is missing, check the cord. Perhaps somewhere along its length the insulation is damaged, and the inner core of the wire is broken. The cord must be replaced immediately. Modern power adapters allow you to replace the cable by simply removing the previous one from the corresponding connector.

However, if there is no obvious damage to the wire (there is a suspicion of a malfunction of the unit itself), you should contact the service workshop. Diagnosis and, possibly, repair of internal parts of the adapter should be performed by qualified specialists in this field.

When you turn on the laptop a black screen. It may not be powered by the power button

To check the serviceability of the button itself, the upper panel part should be dismantled. As a rule, you do not need to completely disassemble the laptop.

Next, you need to check that the button normally energizes and closes the working contacts. Such work should be carried out either with knowledge of electrical engineering and the skills of working with a soldering iron, or under the supervision of a repairman for electronic systems.

If the black screen is turned on when the notebook is turned on, and the button does not connect the necessary contacts, it needs to be removed and a similar battery inserted . At the end of the work, do not forget to screw the disassembled panel back into place.

Problems with the motherboard

Another common reason for the fact that when you turn on the laptop black screen and nothing is displayed - a malfunction of the screen itself or the motherboard. And if checking the monitor requires specialist knowledge, then some removable elements of the motherboard can be sequentially disconnected. Then check the performance of the laptop without this or that element.

The restrictions apply only to the central processor, which is the main hardware-link. The maximum that can be determined is the absence of necessary heat-sealing or chips of the central core (crystal). A heat-removing cooler may also be defective, unless the cooling is not water cooler.