A computer is a technically complex system in which there are many components that interact with each other. The appearance of a malfunction in certain components affects the performance of the computer - the problem may cause the computer to stop starting and stop responding to pressing the power button.
Faulty cable
If the computer does not start up after pressing the power button, check the power cord that runs from the electrical outlet to the back of the case. Check the cable for damage. Try plugging the cable into a different outlet on the extension cord - it is likely that the failure of a separate outlet or the entire extension cord as a whole became the reason for the inability to turn on the computer.
The plugs should be firmly inserted into the computer's power supply at one end and into a power outlet at the other.
Power switch
If the wire is intact, check the power switch, which should be located on the back of the computer near the cable insertion hole. This lever should be in the I (On) position. If the button is already in the desired position, turn it off and on again, and then try to start the computer again.
Power Supply
If, after carrying out these operations, the computer still does not turn on, the malfunction may be associated with a problem with the power supply or the motherboard. Power supply failures are more common. To make sure that everything is in order with the motherboard, remove the side cover of the computer by unscrewing the fasteners on the back panel. Disconnect the power cord and check the tightness of all installed loops in the device.
If the above manipulations did not help in eliminating the cause of the breakdown, then your power supply is broken. To replace it, take the case to a service center and order a PSU replacement service.
You can also replace the power supply yourself at home. To do this, find out the power source in watts by reading the documentation for your computer or by examining the sticker on the power supply itself.
You will be able to find out the necessary information if you remove the side cover of the case.
Then buy the device from any computer supply store. In terms of power, the PSU should match your previous device.
After purchase, you will need to install the power supply into your computer. To do this, remove the side battery cover again and disconnect all cables that go from the old power supply to the motherboard. Note the location of the disconnected wires, then remove the power supply and install a new one in accordance with the fasteners on the case.
Connect all required wires to the motherboard and secure them tightly in the ports. Screw on the power supply and check its operation by connecting to the power supply using the appropriate cable. If the computer starts to boot, the repair is complete and you can close the computer lid.
