Black screen after disabling intel MEBx

[Devicemodder]

I have an LG NC2100 digital signage board that I picked up on ebay to use as a low power server. Was working great until I decided to do something stupid and pressed CTRL + P to disable intel MEBx.

Now when I turn it on, I get a black screen on the HDMI connection, and it seems like the system hangs. I can access the BIOS on HDMI, but that's all I can get the board to do.


I've tried resetting the bios by pulling the motherboard battery, but still get the same symptoms.

There are no options in the bios to turn MEBx on/off. There's supposed to be a ctrl P screen, but it never shows up as I suspect it's defaulting to VGA. But I won't know until I get some wires soldered to the board edge connector. And there's no external pcie slots, so no way to hook up an external GPU.

Is this normal behavior after disabling intel MEBx on a board with intel integrated graphics? And how can I fix this?

[Mike_Intel]

Hello Devicemodder,

Thank you for posting in Intel community Forum.

For us to further check this, please help provide the following details:

1. What is the model of the Graphics controller?
2. What is the brand and model of your system(laptop or motherboard)?
3. What are the troubleshooting steps that you tried so far?

If you have questions, please let us know. Thank you.

Best regards,

Michael L.

Intel Customer Support Technician

[Devicemodder]

>What is the model of the Graphics controller?

Mobile Intel®QM57 Express chipset

>What is the brand and model of your system(laptop or motherboard)?

LG NC2100 digital signage single board Computer

https://www.lg.com/ca_en/business/digital-signage/nc2100/

>What are the troubleshooting steps that you tried so far?

Reset BIOS by pulling CMOS battery, rebooting machine, checking ram.

There is no bios options to turn the MEBx on from the bios. only a screen that normally showed up after post telling me to press ctrl+P. it hangs on post screen now that i turned MEBx off and won't show the ctrl+P screen. 

as for why the old board, got it for a good deal on ebay and want to use it for something else. was working when i got it. 

[AlfredoS_Intel]

Hi Devicemodder,

Thank you providing those information.

Please allow us some time to check on this. 

We will get back to you as soon as we have updates.

Best Regards,

Alfred S

Intel Customer Support Technician

[vij1]

Hello Devicemodder,

Based on the information you provided, it seems that disabling Intel MEBx has caused the system to hang and display a black screen on the HDMI connection. However, you are able to access the BIOS on HDMI.

To troubleshoot and potentially resolve this issue, I recommend the following steps:

Check BIOS Settings: Ensure that the BIOS settings are correct and that the display settings are not set to default to VGA. You can try resetting the BIOS by removing the motherboard battery and then reinserting it. If this does not work, you may need to access the BIOS settings through the VGA port.

Verify Display Settings: Since the system is configured to use HDMI, you should ensure that the HDMI settings are correct in the BIOS. Sometimes, the BIOS might default to VGA if the HDMI settings are not configured properly.

Check for Firmware Updates: Ensure that the system has the latest firmware updates. Outdated firmware can cause issues with display functionality.

Check for Hardware Issues: If the system is hanging, it could be due to a hardware issue. Check the motherboard and other components for any signs of damage or loose connections.

Try a Different Display: If the system is hanging on the HDMI connection, try connecting a different display to see if the issue persists. This can help isolate whether the problem is with the display or the system.

Check for BIOS Updates: If the BIOS does not have an option to turn MEBx on/off, it might be because the BIOS is not compatible with the system's configuration. Check for BIOS updates that might address this issue.

Best regards,

Vijay N.

[Devicemodder]

Right, so I tried hooking up VGA, (required me to bust out the soldering iron, as VGA is on the edge connector on this board) and I get the same symptoms as I do with HDMI. I'll check the manufacturer site and see if there's a bios update, but I don't think so.

[vij1]

Hello Devicemodder,

Could you please share a screenshot of the error?

Regards,

Vijay N.

[Devicemodder]

No error code, just a black screen.

Here's a video trying to boot
https://files.catbox.moe/wpf79c.mp4

All it does is get to that black screen and hang. And this is with VGA connected

[vij1]

Hello Devicemodder,

Thank you for sharing the information. We will provide an update shortly.

Regards,

Vijay N.

[vij1]

Hello Devicemodder,

Greetings!

We recommend that you access the regular BIOS. The Intel® AMT feature is usually found in the manageability section of the BIOS. Please note that AMT only works with the embedded graphics port (if HDMI is the embedded port, then you are using the correct video port).

Since you can access the BIOS, please check if the system recognizes the hard drive and the Boot OS partition. The MEBx BIOS is an optional feature for setting up remote access.

According to the LG website, this is an older product. The issue might be related to the hard drive or the operating system.

For more information, please visit the LG support page for your product: LG NC2100 Support

Regards,

Vijay N.

[Devicemodder]

I've checked every section of the regular BIOS multiple times, cleared/reset the BIOS multiple times. there are NO options for turning it back on. As for HDD/OS related issues, the drive boots in other machines, and the BIOS on the LG board does see all drives/ram. i get the same black screen even if i try to boot from a USB flash drive.

All i want to know is how to turn MBEx back on as i believe it'll solve my issue, when there isn't any options in the regular BIOS for it and the CTRL + P screen won't show up.

[vij1]

Hello Devicemodder,

Greetings!

Thank you for providing the details. We are currently reviewing the information and we will reach out to you as soon as possible. We request your patience during this time.

Regards,

Vijay N.

[vij1]

Hello Devicemodder,

Greetings!

Could please share the ECT logs :

ECT Logs:

1. Intel® EMA Configuration Tool (ECT)

https://www.intel.com/content/www/us/en/download/19805/30485/intel-endpoint-management-assistant-configuration-tool-intel-ema-configuration-tool.html

Installation:

Download and unzip the tool.

Double-click the .msi file and follow the prompts.

Run:

a-Open a command prompt as administrator (alternatively, you can run the tool from Windows PowerShell*).

b-Navigate to the installation folder (default C:\Program Files (x86)\Intel\EMAConfigTool).

c-Run the command: EMAConfigTool.exe --verbose

Regards,

Vijay N.

[Devicemodder]

Does this run over the network? Because the board wont even boot into an OS at the moment, so I can't run it directly on the machine with the issue.

[vij1]

Hello Devicemodder,

Greetings!

Thank you for your response. Without booting to the OS, you won't be able to run the ECT logs. We kindly request you to check with your OEM to confirm whether AMT support is available.

Thank you for your cooperation.

Regards,

Vijay N.

[vij1]

Hello Devicemodder,

I am following up on the case and wondering if I can help you with anything else. Look forward to your response.

Regards,

Vijay N.

[Devicemodder]

Unless there's other methods I can try to get the board working, then nothing comes to mind st the moment.

[vij1]

Hello Devicemodder,

I am following up on the case and wondering if I can help you with anything else.

Regards,

Vijay N.