How to fix a Laptop / Desktop that won’t turn on?

If your computer is having trouble turning on, the first thing to do is to avoid panicking. When a PC or laptop refuses to turn on, it’s hard to know exactly where to start. Since the latest generation devices are often complex, it is not always easy to detect the source of the fault and quickly find the solution to adopt. In this tutorial, we’ll help you fix your laptop/desktop that won’t turn ON through different solutions.

Check cables and power

The first thing to do if your computer does not start is to check if the problem is with the cables. If your Windows System is powered, that is to say when the various LEDs of the internal components light up, you can directly go through the next step. If not, start by inspecting the cables coming from the wall. First, check the condition of the wall outlet to which you have connected your equipment.

To ensure that it is active, simply plug in another electrical device, such as a bedside lamp, to verify that the power supply is working properly. If your lamp lights up correctly, then plug in your computer’s power cable. Sometimes the connection has not been made correctly. If in both cases,

For the case of a laptop, also check that all cables, whether at the wall outlet or at the adapter in the middle of the power cord, are plugged in properly. In addition, to know how to repair your laptop that does not start and remains on a black screen, if you use a power strip, also check that your equipment is functional. Do not hesitate to connect another electrical device to each socket, in order to check that they transmit electric current perfectly. It happens in fact that one and only one socket on the whole is damaged.

Once you have successfully verified that the power source is working properly, but your computer still does not turn on, it is now time to check the actual power cable, i.e. the one. that conducts electricity through your device. For a PC, this tool is better known under the name of C13 cable. You should know that most monitors are connected via a cable identical to that of the PC power supply unit.

In this case, do not hesitate to use the one on your screen to verify that the problem with your PC not turning on does not come from your power cable. If your computer still won’t turn on, your best bet is to get a new cable. Be aware that some PC configurations that are quite a power hungry require a higher gauge cable. Always make sure that the replacement cable is the correct gauge, to avoid any further problems.

Charger and battery

Still, on the power level, the process is much more different for a laptop that does not start but remains on a black screen. As mentioned above, the first thing to do to identify the source of the failure is to check the wiring as well as the power cord. For laptops, remember to unplug and reconnect the cord that connects to the adapter on one side, and the one that connects the adapter to your laptop on the other side.

You should know that in many cases, moving your laptop frequently can damage the power connector, and especially its ends. It is very likely that the protective sheath will strip to reveal the wires which are inside the cable.

If the connections are normal, then you must go to the next step, that is to say, look at the condition of the battery. In the case of laptops, the battery can be the cause of the failure. To be clear, and see why the machine does not start, it would be best to remove the battery directly from your laptop and plug it directly into the mains.

If your computer restarts, it means the problem is with the battery. In this case, all you have to do is replace the battery of your device. For safety reasons, but above all, to preserve your device, always make sure that the replacement battery is the same as the one that failed. The ideal would be to contact the manufacturer and find the original model.


If the tests, verifications and checks on the power supply were not conclusive, it is now time to move on to the black monitor stage. For safety reasons, disconnect any external screen plugged into your computer, to name only the projector, to see why the machine does not start. For this step, the goal is to test your computer with another monitor.

You will therefore need an HDMI cable which will be the link between your computer and the emergency screen. Try to turn on the device. If the rescue screen correctly displays the contents of your device, it means that the screen that remains black is the cause of the failure. You must therefore plan a computer repair. In most cases, PC screens are accessible,

On the other hand, for a laptop, repairing a screen is quite tedious. You should know that in this type of failure, that is to say the machine that does not start, if the indicator light on the screen is on and the fan is quite noisy, without displaying any image, you just need to ” turn off all surrounding lights.

Then check if a light veil appears on your screen. In this case, it is very likely that the LCD inverter, that is to say the component which is responsible for supplying light to the screens of laptops, is not functioning correctly. The brightness is reduced considerably and the screen is completely black. It is quite possible to replace it, but the operation is quite delicate. The intervention of an expert is strongly recommended.

Problems with POST

Problems with the Power On Self Test or POST may also prevent your device from starting up. As a reminder, POST is established as the first step in the process of turning on a computer. Can be considered as a kind of boot, it uses the BIOS of the motherboard to check the presence of the other components essential for the good functioning of the computer. After POST, this tool activates the operating system whose role is to ensure the execution of other tasks.

When a computer does not turn on, it is therefore very likely that one of the components necessary for the proper functioning of the computer is faulty or missing. In the same principle, the presence of an external device storing your data files which generates conflicts with the system is also likely to prevent the device from restarting.

In both cases, the failure is material. A diagnosis which is accompanied by a series of tests will then be necessary. You have several options for taking the POST test on laptops. When turning on your computer, if your device beeps repeatedly, be aware that the absence or failure of one of its components is preventing your computer from turning on. In this case, it would be preferable to inquire about the indications of the manufacturer.

The other way to identify the source of the failure that prevented the computer from starting up is to check the components of your computer one by one. This will identify the faulty element that is preventing your machine from starting. For this step, you will therefore have to carry out maintenance work on specific components, in order to make them functional again following a failure.

You will thus check one by one the RAM memory, the processor, the graphics card, the BIOS, the hard disks which save your data in files as well as the connectors. The other trick that helps identify component (s) that are not working properly on laptops is to plug in your computer and turn it on only with the essential and minimal components.

If you have not yet succeeded in restarting your Asus, Acer or any other brand computer, do not hesitate to change the available components one by one with newer and more efficient versions, in order to help you identify the one. which is no longer operational. Moreover, if the connection of the basic components including the motherboard and the hard disk with data allows an immediate restart, associate the other secondary components one by one, until you succeed in identifying the one that has not fulfilled. its role correctly, and which generated the failure which prevented the computer from starting from the dedicated keys.

Use the recovery disc to start the computer

The use of the recovery disc will be essential when an error message is displayed in a common way, but above all, if the ignition problem is neither removable elements, nor components of your computer brand Acer, Asus or other. At first, do not hesitate to use your Windows recovery DVD to activate the desired mode.

If ever you do not have this tool at your disposal, you always have the option of downloading a recovery image to another computer., and burn it to CD or DVD or copy it to a USB stick or external hard drive to start the device.

Note, however, that the computer you will use to perform this download must operate under the same system, with the same features for the RAM bar and the motherboard, or even the graphics card. All you have to do is start your computer with this USB key or this DVD, by pressing the appropriate keys, in order to correct the malfunction linked to starting your computer with Windows.

System recovery, reset and restore

If your computer’s POST is running correctly, and your Asus or other brand machine manages to power on, but fails to load the system software, it is highly likely that the hard drive is damaged or your operating system was removed even with high performance RAM memory. A malfunction of an internet component can also be the cause of this type of failure which prevented the computer from starting up.

Faced with this type of anomaly, the best way to correct the failure would be to access the BIOS boot directly. Note that when switching on, a hard drive that has failed or has moved from its location does not appear in the Boot Menu. Sometimes replacing your hard drive is all it takes to display the operating system software again and correct the error. On the other hand,

Regarding the system restore reset, be aware that the majority of operating systems with high performance RAM always provide an effective solution against malfunctions. To be able to use this functionality, however, it is essential to activate it first. It is therefore important that the function is enabled for the hard drives on which you want to recover. Then create a restore point that you will use later. Note, however, that the creation of these restore points is done automatically during updates, including Windows Update.

When turning on your machine, choose the option to start in safe mode to access the system software interface, with the basic functions. This type of operation is sufficient to restore old backups of your system to your hard drive. In this case, you must access the “System protection” tab, in order to click on the “System restore” button which will subsequently display the restore points that you have created manually or which have been automatically generated in all portable computers. Choose one of them and complete the process. Your system will simply revert to its functional version, according to the tutorial to start normally.

Boot into Safe Mode

Booting into Safe Mode also helps you boot laptops that won’t turn on from the power button, even after a blue screen. Available on Windows with powerful RAM, this tool by default is quite powerful. This is also one of the best alternatives to virus or malware attacks that can be fatal for the hard drive, via a usb key among others according to the tutorial.

In addition, using this safe mode after blue screen gives you the opportunity to diagnose the failure encountered by the system that prevented the computer from starting, in order to correct it. As a reminder, in addition to running a system scan, Safe Mode allows you to restore your system, while removing any software you recently installed. It also checks for crashes and performs a variety of operations to correct system issues, including Windows Update.

You should know that the modifications as well as the addition of programs, without forgetting the deletion of one of the Windows accounts affected by a virus not supported by an antivirus, are likely to prevent the “normal” start of your computer equipped with the best meter card according to the Safe Mode tutorial.

If you have a Windows version earlier than 8, just press the f8 key when restarting your computer, and select Safe Mode. On the other hand, for PCs running Windows 8 and 10, booting in Safe Mode is done from the Start menu settings and not from the f8 key. Clicking on Update & Security will take you to the Recovery tab. Under Advanced Startup, tap the “Restart Now” button. There are three options available to you, and simply hit the Troubleshoot option. You will then choose the Advanced options, as well as the activation of the Safe mode option in the settings.

Leave a Reply

Your email address will not be published. Required fields are marked *