VGA Light On Motherboard: What Does It Mean?

Did your PC start showing a black screen all over again? If you are dealing with a PC build, this is going to be one of the most common issues that you have encountered off late. Well, the VGA light on the motherboard clearly indicates that there is some issue in detecting the Graphics Processing Unit, often abbreviated as the GPU. The most common reason behind this is a loose connection. You can too often witness a black screen out of nowhere on your system even when your PC had been switched on.

Well, if you see such a problem persisting with your PC, it may be due to a loose connection or some glitches. Here are some of the causes and solutions that you can refer, to so as to fix the VGA lights on your motherboard.

When do you see the VGA light to be on?

If your CPU starts before the monitor, it won’t be able to detect the display. Therefore the VGA (Video graphics array) light will turn on. However, you will see that the system has been functioning normally without any trouble. The screen will get stuck only when there is no display. Here are a few reasons when you get to see this light turning up:

The motherboard is not compatible with that of the graphics card

You have got damaged or bent GPU pins or slots

There is not enough power supply to your GPU

The monitor is off

Also Check – Red Light On Motherboard

How To Fix VGA Lights on Your Motherboard?

Before diving into the fixes, you must check that the graphics card and the motherboard are compatible. In case you have got an outdated motherboard alongside a new model of the graphics card, the pair will be incompatible and you are sure to see this light turning on.

1. Check the Power Supply

If you have a low-wattage Power Supply Unit or PSU, some of your parts might not function appropriately. You can even look for some third-party apps to assist you in calculating the power supply that your PC would require, with all the parts plugged in. You may need to get a new PSU if you see that the Watt number on your PSU is lower than what you have fetched from the website.

2. Remove the hardware

If you truly want to detect where the problem lies, the best thing that you can possibly do is to remove all the unnecessary hardware. Once you have detached all the external peripherals of your PC such as the hard drives, USB devices, or PCIe cards, and allow the system to take a boot only with the RAM, CPU and the CPU fan, you will be able to determine the issue. As the computer starts normally, you should be reconnecting the devices one at a time, to determine which part is actually causing the trouble!

3. Reseat the graphics card

In case the graphics card isn’t seated properly on the PCIe (Peripheral Component Interconnect Express) slot, you may get to see the VGA light on. You can follow the steps mentioned below to sort out this issue:

4. Removal of the graphics card

1. Simply open the PC case and then disconnect all the cables which are anyway connected to the graphics card.

2. Now, unscrew the graphic card from the mounting bracket situated at the backside of the CPU case.

3. Next, unlock the card by pulling the small level present on the PCIe slot in a gentle manner.

4. You will now be able to remove the graphics card from the slot at ease without any hassle.

5. Reinsert the graphics card

1. At first, unlock the PCIe slot all over again.

2. Press the card into the slot. You will get to hear a click sound.

3. Screw the rare bracket to secure the card into the case.

4. You will now be able to connect the desired PSU cables.

6. Boot without having the graphics card

You may be able to boot your PC without a graphics card if you are having an Intel processor with an integrated GPU. However, that won’t help you run any kind of graphic-intensive tasks. Since AMD processors do not come with an integrated GPU, booting isn’t possible without a graphics card.

7. See if there is any damage caused to the GPU or PCIe slots

Any damage caused to the GPU or the PCIe slots will restrict the motherboard from detecting the graphics card. Also, it comprises a PCIe Express x16 connector which often gets damaged. You will see small gold-plated lines therein which are responsible for communicating data from the motherboard to the graphics card and vice versa. In case any of these lines are stained or damaged, the motherboard will fail to detect the graphics card. Therefore, you should clean it from time to time, with the use of cotton swabs and alcohol. If it still doesn’t work, chances are that you might need to replace the graphics card.

Stains on the PCIe slots are yet another issue! Since this slot is damaged to the motherboard, the chances of causing any damage are going to be low. However, you can still get into this trouble if dust seems to settle on the slot and cause an instruction between the GPU and the motherboard. Just use a can of compressed air to clean the PCIe slots and get rid of the dust from them.

8. Reset the BIOS

The Basic Input / Output System is an integral program that is responsible for booting the PC. It helps to enable or disable all the devices that are connected to the motherboard. If any setting is changed, the parts will automatically start to malfunction. Fixing this isn’t difficult, you can easily do it by resetting the BIOS to the factory default settings. Here’s how you can do it:

9. Resetting the BIOS itself

1.    At first, you will require to have access to the BIOS.

2.    Now, restart the PC and press the Del key.

3.    Next, see the option “Load Setup Defaults”

4.    Press Enter button and ‘Save Changes.’

10. Resetting using CMOS

The Complementary metal oxide semiconductor or the CMOS is a battery-like device that is responsible for storing the BIOS setting. Remove the CMOS from the motherboard to reset the BIOS.

11. Resetting the Jumper

Resetting the CMOS Jumper can also help you settle this issue.

Replacing the motherboard CMOS can be the ultimate solution if none of the above-mentioned steps works!

12. Update the BIOS

Last but not the least, an outdated BIOS version can be the culprit. Choose to update the BIOS so as to fix the VGA light flashing problem. Once you have taken the update, check if your PC is starting, and if it does, that depicts that there might be some issues with your hardware that seek a replacement.

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