Fixing Red Light on Motherboard (Guide)

    Any issue with the motherboard is not simple to handle. If you’ve never worked with motherboards or anything like that before, it may appear really hard. The information in this article will assist you in understanding the various red lights and guide you to fixing Red Light on Motherboard.

    The motherboard serves as the core hub for all circuits. This is why even minor errors can destabilize the entire machine. However, the motherboard also has powerful diagnostic skills to eliminate any potential threats. The most frequent approach for a motherboard to signal a mistake is to display LEDs.

    LED light indication

    Every motherboard now includes several LED lights that signify unique components. The procedure becomes considerably simpler, and you immediately shift into problem-solving mode. Here are all four indicators and what they mean:

    • CPU: The presence of a Red CPU light on the motherboard indicates that the CPU is not being detected by the motherboard. It is possible that the CPU was not correctly attached, or that there is a cable issue. Sometimes the issue is with the CPU fan, which has not been correctly attached.
    • DRAM: When there is an issue with the RAM module’s location, the DRAM indicator on the motherboard becomes red. Examine the clamps that hold the RAM in place to rule out this possibility. This is the problem indicated by the red light if these clamps are not fastened on both sides.
    • BOOT: When there is a red light on the motherboard by the BOOT indicator, it shows that something is wrong with the boot devices, most likely the hard drive on which the operating system is stored.
    • VGA: Red light beside the VGA label indicates that the problem is with the graphic card. In most cases, the graphic card was not correctly positioned or installed.

    Causes and Fixing of Red Light on Motherboard

    To find the cause of your malfunctioning (red light) motherboard, here are a few things you should check first.

    Specific Hardware Problem

    Check for the light on the motherboard and see which part is blinking to determine the problem. Then fix the required system or hardware. If you feel like any connected hardware is faulty and not the motherboard, you can switch the faulty item to a new one to ensure it’s working properly.

    First, remove any dust from your Motherboard. Then thoroughly inspect all of the hardware. In addition, inspect all connectors and sockets to verify there are no loose connections or damaged sockets. To check for hardware issues, remove all attached hardware and unplug each connection one by one, then reseat them back to their original positions to determine which hardware is causing the problem.

    Broken or Poorly Plugged cables

    The most common issue is the broken supply cable or any of the connecting wires. It is as simple as it seems, remove and plug in all the cables again connecting all the parts. If this doesn’t solve the problem, and if the broken power cord is confirmed to be the source of the problem, attempt dealing with it by replacing the broken cable and using new fresh cables. This may solve the problem easily.

    Check CPU

    • Misplacing CPU

    Sometimes we forget to check if the CPU is firmly placed inside and with a few pushes and movements, it misplaces. This is a big trigger for the motherboard so it would show the red light.

    When such a circumstance occurs, check to see if the CPU/GPU is properly installed on the Motherboard. If it is discovered to be wrongly positioned, try to resolve the matter by repositioning it. Some Motherboards have a secure place where you can place the CPU with no worry that it will move.

    • Overheating CPU

    Running your system for an extended period of time may lead it to shut down randomly and a flashing red light on your motherboard. This could be because your system is overheating as a result of constantly running out of power. So, in order to fix the red light problem, you must limit your CPU consumption followed by these steps:

    • Position your system on a stable surface.
    • Using a soft cloth or brush, remove the dust from the CPU fan.
    • Examine whether the fan cable is correctly attached to the motherboard and also working properly.

    BIOS System and CMOS Battery

    The BIOS, which stands for basic input/output system, is a sophisticated program that every machine needs for a smooth startup. Even minor changes can have a significant impact (such as blinking red light). Resetting your BIOS is one of the most efficient techniques to fix a computer that won’t boot. This will reset your motherboard settings and may address a variety of problems.

    If your motherboard’s CMOS battery becomes completely dead, depleted, or broken, you may find yourself in this difficult predicament. As a result, if your CMOS battery is exhausted or damaged, the BIOS firmware will not load. As a result, such a predicament can be resolved simply by resetting or replacing the CMOS battery.

    Take the following steps:

    • Remove your CMOS battery and allow your computer to sit for 15 minutes before replacing it.
    • A CMOS jumper can also be used to reset the BIOS. The jumper is adjacent to your CMOS battery on your motherboard.
    • Find the jumper and hold it for 5-10 seconds before moving it back.
    • If it doesn’t work, your CMOS battery is most likely dead, and you should replace it before proceeding.

    Problems with RAM

    Another possible reason causing this issue to occur is damaged or misplaced RAM. If the RAM is not properly seated or is damaged then you may face this red-light issue.

    There are three things to look for when it comes to RAM. First, check to see if it is compatible with your machine. Then, if it is correctly inserted. Finally, if one of your modules has died, all of your other modules will fail. To test for compatibility or insertion issues, remove both modules and reinsert them one at a time into various memory slots while rebooting until they function or do not work.

    Faulty Hard disk

    In most circumstances, a problem with your hard disc will cause you to encounter such issues. So, if this is the reason for your problem scenario, try to resolve it by replacing your hard drive. This is not a common problem but can sometimes be the cause of the motherboard’s red light.

    Last Resort: Replace Motherboard

    Going through all of the troubleshooting steps described above is the best approach to determine if the problem is with the motherboard. If you’ve done everything and the problem still persists, it’s most likely a motherboard problem. If the motherboard is faulty, you can also experience this issue with the motherboard. To resolve the issue, you must replace the faulty Motherboard with a new one.


    Any problem regarding technology needs to be analyzed and then acted on as most of us are not professionals. We don’t know much about the mechanics and can sometimes get more harm done than solving a basic problem. To prevent this, it is important to read about stuff like this from multiple sources and ask someone experienced for tips. The issues with the motherboard aren’t as hard to solve so you can do it. Just remember to be careful and not touch anything you are not supposed to.

    Hopefully, this guide helped you. For more guides on technology, check our Tech section and keep yourself updated.

    Izna Anjum
    Izna Anjum
    Just a human being who likes to spend time gaming, reading or watching anime. Nice to meet you.
    Notify of
    Inline Feedbacks
    View all comments