Error message: code 43 – what does it mean?

Every computer owner - whether an IT enthusiast or a so-called “casual” user who uses the device to browse news on the internet and play solitaire - encounters various types of errors displayed on the monitor screen. These can be caused by a wide range of reasons - from hardware failures, through software incompatibility, to errors resulting from improper user actions. Some signal serious malfunctions and even prevent the use of the computer. Others do not directly affect work comfort, so theoretically they can be ignored - at least for some time, hoping that the problem will not return in the future.

One of the most common errors is the so-called error 43. This error does not discriminate - it can appear on any version of Windows - both the latest edition numbered 11, as well as earlier ones: 10, 8, 7, and even Windows Vista or XP.

 The full message usually looks like this:

• If the system has the Polish language version set: Windows has stopped this device because it has reported problems. (Code 43)
• If the system has the English language version set: Windows has stopped this device because it has reported problems. (Code 43)

Code 43 - Windows - causes of the error message

Error code 43 means that the system is signaling communication complications with one of the devices. In the vast majority of cases, it indicates problems with the graphics card, but the message can just as well be caused by a failure of a printer, webcam, network card connected to a USB port, or any other peripheral device.

The appearance of error code 43 can indeed indicate physical damage to one of the devices - in such a case, the only solution might be repairing the damaged hardware or buying a new unit. Most often, however, the message is displayed due to software failure, specifically the driver responsible for communication between the system and the device. So if the problem involves a graphics card, the error can probably be blamed on the graphics processor drivers. This means that fixing error 43 may take just a few minutes and will not require specialist intervention.

Why does this happen? The answer lies in the industry itself, which never stands still. Device drivers are usually updated regularly by the manufacturer to cope with the dynamic development of operating systems, new technologies, and user demands. Due to the complexity and multitude of standards, driver updates can cause a temporary “disagreement” between the system and the device. Conversely, an operating system update (for example, upgrading from Windows 10 to Windows 11) can also be the cause of error 43.

Code 43 - graphics card - sometimes simple solutions work

In most cases, error 43 means that the system informs the user that the computer does not detect the graphics card. Before moving on to more advanced methods of solving the problem, a simple restart of the computer might be a good idea - the well-known method from countless memes of “have you tried turning it off and on again” is not particularly sophisticated, but it can be effective.

What to do if the problem is not solved?

Graphics card - code 43 - driver management

In such a case, it’s best to start by updating the drivers - perhaps the manufacturer has since published an update that resolves the problem. You can download the latest graphics card drivers from the manufacturer’s website - nVidia if the problem concerns GeForce cards, or AMD if the system does not detect a Radeon card. If the computer has an integrated graphics card (a solution often used, for example, in laptops), drivers can be downloaded from the computer manufacturer’s website or found on the disc included in the set.

If error 43 appeared immediately after updating the drivers, the solution might be to roll back to the previous driver version. Just open the Windows Device Manager (you can reach it by typing its name in the Start menu or through Control Panel → Hardware and Sound → Devices and Printers → Device Manager). Then select the device from the list (usually highlighted to help the user identify it - if not, just expand the Graphics Cards menu), right-click on the card name, and go to Properties. There you will find a special Driver tab that allows managing the device drivers. 

The last thing you need to do is click the “roll back driver” button. 

The methods presented above are the most likely solutions to fix error 43 in Windows. If the problem persists despite following the advice, the cause may not lie in the software but in the condition of the device - for example, the graphics card may be losing its properties due to age, previous overheating, or faulty connection to the computer’s motherboard. In such a case, help from a technician or purchasing new hardware may be necessary.