black screen after bios update

A BIOS (basic input/output system) update is a software update to the code that runs on the motherboard of a computer. The BIOS is in charge of controlling a computer’s hardware and starting the system. A BIOS update can be advantageous in a variety of ways, including improved compatibility with new hardware or software, bug fixes, and the addition of new functionality.

However, problems such as a black screen can occur following a BIOS upgrade. This can be aggravating and potentially dangerous because it prevents the computer from booting correctly. This blog post will go over the causes and possible solutions for a black screen following a BIOS upgrade.

Symptoms of a black screen after a BIOS update

A black screen after a BIOS update can be one of the most frustrating computer problems. A symptom is a black or blank screen during or after the boot sequence, with no video input from an external monitor. In rare cases, the system may also hang at a certain point in the boot sequence, such as when it attempts to initialize the graphics driver. This can happen immediately after updating the BIOS or even weeks later. Additionally, some users have reported flickering screens or distorted images during boot-up. The exact cause of a black screen after a BIOS update is not always clear, but it typically results from incorrect settings being applied during the update process.

In some cases, this could be due to hardware incompatibility between components such as a CPU and motherboard; other times, it could be due to outdated drivers or firmware settings that are no longer compatible with newer hardware versions. It could also be caused by an incomplete download of the BIOS package, incorrect installation steps taken during setup, or conflicts between different versions of firmware running on different system components. When troubleshooting a black screen issue following a BIOS update, ensure all cables are securely connected and all power switches are turned on correctly.

Also, check if any additional settings were changed in the BIOS, which could affect how your device boots up – for example setting wrong timings for RAM modules or incorrect voltage settings for processor cores. Test out different display ports (HDMI/DP) and see if any of them work correctly instead of defaulting to VGA/DVI port which might not be working correctly anymore due to incompatible drivers/firmware updates.

Suppose none of these steps resolves your issue. In that case, you might need to consider more drastic measures, such as resetting your BIOS back to its original state using specific jumper pins on your motherboard (check the manual for details) or flashing your BIOS with an older version (which should only be done by experienced users).

Additionally, you could try updating your graphic card driver, if available, and compatible with a recent version of BIOS installed on the system before attempting the above steps – sometimes GPU drivers need minor tweaking to be compatible with the latest Motherboard/BIOS firmware changes and can cause issues like this if not updated accordingly.

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Symptoms of a black screen after a BIOS update

A black screen after a BIOS update can be caused by various issues, ranging from incorrect settings in the BIOS to incompatible hardware or software. One of the primary causes is when a user fails to install all the necessary drivers for their device’s components after updating the BIOS. The latest version of the BIOS may not be compatible with existing drivers, resulting in a black screen upon boot-up.

Another potential cause of a black screen after a BIOS update is if changes are made to incorrect settings in the BIOS. This could happen if a user is unfamiliar with configuring the BIOS properly, resulting in an incompatibility between hardware and software. Additionally, if insufficient power is supplied to certain components, it may lead to a black screen post-BIOS update.

In some cases, incorrect setting values or outdated memory configuration may also result in this issue. Suppose users try to use memory modules not supported by their system’s motherboard. In that case, they may experience this problem. Furthermore, suppose certain settings, such as “Optimized Defaults” or “Load Factory Settings,” are enabled incorrectly. In that case, they can also cause this issue.

Finally, another potential cause of this issue is general hardware failure or damage. Suppose any hardware components, such as RAM, hard drive, or CPU, have failed or become damaged due to overheating or other reasons. In that case, it can lead to a black screen upon boot-up after performing a BIOS update.

Troubleshooting steps

When troubleshooting a black screen after a BIOS update, the first step is to check the power supply. Make sure that all wires are properly connected and that the power cord is securely plugged in. Check if your device is receiving enough power by measuring its voltage with a multimeter. If it is below the minimum requirement for your device, then you need to replace the power supply or find an alternative source of power.

If the power supply is not an issue, the next step would be to check the hardware components themselves such as RAM, CPU, and hard drive. You can visually inspect these components for any signs of damage or loose connections and reseat them if necessary. Additionally, you can use diagnostic tools such as memtest86+ and hard drive test software to verify if your RAM and hard drive are still functioning correctly.

Next, it’s important to reseat all cables on your motherboard including data cables, peripherals such as USB and HDMI ports, display port connectors, expansion cards (e.g., graphics cards), audio jacks etc. This will ensure that all connectors are properly seated in their sockets and that there’s no interference from outside sources like dust or other debris.

Finally, you should reset your BIOS settings back to default by entering CMOS setup mode through pressing certain keys during boot up or accessing it through your computer’s UEFI interface (if available). This will allow you to start fresh with factory settings which may help resolve any issues caused by incorrect BIOS settings after an update was applied. After resetting your BIOS settings back to factory defaults, try booting from another bootable media like a USB drive or CD/DVD disc containing another operating system in order to rule out any potential software conflicts within Windows itself.

Fixing the problem

Fixing a black screen after BIOS update can be a tricky endeavor, but it’s not impossible. The first step to resolving the issue is to identify the cause. If you have ruled out hardware issues and determined that the problem is caused by the BIOS, then you will need to find a solution.

The most common approach to fixing a black screen after BIOS update is to use a recovery disk or USB drive with an image of your system’s previous BIOS version. This should allow you to restore the working version of your BIOS and fix the black screen issue. It might also be necessary to manually adjust settings in your computer’s configuration, such as adjusting boot order or disabling unnecessary components.

In some cases, it may be possible to recover from a bad BIOS update without reverting back to an older version. To do this, look for any available patches or updates from your computer’s manufacturer that can help fix any bugs that may have been introduced by the failed update. You might also consider resetting your computer’s CMOS (complementary metal-oxide-semiconductor) settings, which can sometimes resolve issues related to failed BIOS updates.

Finally, if all else fails, you may need to contact customer support for your computer’s manufacturer in order to get additional help with fixing your black screen issue related to a failed BIOS update.


In conclusion, it is important to be aware of the symptoms, causes and troubleshooting steps for a black screen after a BIOS update. It is possible that the issue could be resolved with simple troubleshooting steps, like resetting your computer or checking hardware connections. However, if these do not fix the problem then using software tools and/or professional help may be required. In any case, it is always recommended to back up your data before attempting any BIOS updates in order to prevent further complications.

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