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The video card is an indispensable device, extremely important for the computer . If the card is damaged, you will not be able to use it. To fix the situation, let's take a look at the article below with Dien May XANH to learn how to fix the error when the computer does not recognize the video card simply and in detail! What is a video card? Video card, also known as  VGA (Video Graphics Adapter), is the part that processes images in the computer such as color, resolution, image quality displayed on the screen,... Depending on the device model you are using, the quality of the card will vary. Cards are indispensable and very important hardware for computers. It determines how fast or slow the machine is. The higher the quality of the card, the faster the data processing and vice versa. Therefore, depending on the quality of the card, the price will change. The higher the quality, the higher the price . Depending on your needs, please own a suitable video card! 2Reasons why the computer does not recognize the video card There are many reasons why the computer does not recognize the video card, but in general there are only some of the most common basic causes, as follows: Drivers are used for a long time and are too old, leading to errors, damage, etc. Your computer has the wrong driver installed for the video card. There is a problem with the connector, the connection wire may be loose or the connection port may be broken. 3How to fix the error of the computer not recognizing the video card simply Here are some simple, detailed ways to fix the error of your computer not recognizing the video card: Check the video card connections Normally, the computer video card will be attached to the mainboard via the PCI Express slot . If suddenly your computer does not recognize the card, check and make sure that the card is inserted tightly and snugly in this slot. Then proceed to observe and check the output ports on the card such as  VGA, HDMI , DisplayPort ... to see if they are plugged in tightly, are the wires incorrectly plugged in or are they plugged in correctly with the screen? In addition, for some high-performance card models that require the support of a 6 - 8 pin power supply , please check to see if they are fully plugged in, to make sure they are plugged into the correct sources? In addition, to fix the screen, screw a screw to fix the card and case. In case, if you forget or do not install this screw, it will cause the video card to become misaligned from the PCI connector . If you forget this, now fix the video card position by installing screws to make sure! Show hidden devices This method is only applicable when you have previously used the video card in a stable, normal state and your computer only recently encountered the phenomenon of not recognizing the video card. In this case, the card may have been hidden, you just need to reactivate it. Step 1: Press  Windows key + R > Run window will open > Enter devmgmt.msc in the box > Click OK. Step 2: The Device Manager window  opens > Click  View > Click  Show hidden devices. Step 3: Click  Action > Select Scan for hardware changes. Step 4: You can check the graphics card again by going to  Display adapters (or Graphics card, Video card, GPU card) Check the video card driver While using the computer, you accidentally install incompatible software or  a virus invades, causing the Driver to become corrupted or disappear. Drivers are also quite important parts. If the driver is missing, the computer will not recognize the video card. When encountering this situation, you need to check your computer's Driver. If it is truly corrupted (there will be a yellow exclamation mark) or missing, you should quickly find the Driver corresponding to the video card model you are using. then reinstall. In addition, you can use some automatic tools to find and download Drivers such as Driver Easy or Driver Booter. Update BIOS BIOS  (Basic Input/Output System), also known as the basic input/output system, has the function of initializing hardware and starting processes during computer startup.  Therefore, if using the above methods still does not fix the problem, please update the BIOS to fix the error of the computer not recognizing the video card! Step 1: Press the Windows + R key combination  > Run window opens > Enter msinfo32 > Click OK. Step 2: Check the information in the BIOS Version/Date section > Visit the manufacturer's homepage. Step 3: Check the  Support (or Download) section > Search for the latest BIOS update , suitable for the computer model you are using. Step 4:  Continue downloading files and installing properly to avoid errors and work well. Step 5: Restart the computer > Check to see if the error of the computer not recognizing the video card has been fixed. Note:  This method is quite complicated. If you update incorrectly, it can cause serious computer errors such as lost data and some other related problems. Therefore, if you do not have highly specialized techniques, take it to a reputable machine repair center to ask them for update support!