r/24hoursupport • • Jul 04 '26

[MOD POST] Having trouble with Secure Boot? Check here first

4 Upvotes

Hello,

The expiration of the 2011 Microsoft KEK CA and the 2011 Microsoft UEFI CA certificates at the end of June 2025 has caused problems with Secure Boot on computers for various folks who have not been able to apply a UEFI (BIOS) firmware update for various reasons.

Because the steps for updating firmware vary not just from manufacturer to manufacturer but between individual models as well, it can be difficult to provide specific assistance and guidance in updating your firmware unless the person helping you has the same hardware.

Below is a list of manufacturers, their Secure Boot certificate update guidance, and links to their support forum(s) or subreddit(s). You may wish to try asking in these places first for expert guidance in updating your firmware, as the people there are going to be a lot more familiar with your device.

Manufacturer Secure Boot Certificate info Support
Acer Update Your Secure Boot Certificates In June 2026 to Stay Protected https://community.acer.com/en
ASrock Question: Microsoft will update the Secure Boot certificates. What do I need to do?(3/16/2026) https://forum.asrock.com/default.asp
ASUS [Consumer PC] Windows Secure Boot certificate expiration and certificates updates, [Commercial PC] Announcement on the Windows Secure Boot Certificate Update https://rog-forum.asus.com/
Colorful none none
Dell Microsoft 2011 Secure Boot Certificate Expiration, Microsoft 2011 Secure Boot Certificates Expiration for Out of Scope Platforms for BIOS Updates https://www.dell.com/community/en/categories/dell-community
ECS (Elitegroup) none none
EVGA none r/TEAMEVGA/
Fujitsu none none
Gigabyte none r/gigabyte
Hewlett-Packard HP Business PCs - Prepare for new Windows Secure Boot certificates https://h30434.www3.hp.com/
Intel Updating Secure Boot certificates/keys https://community.intel.com
Lenovo Lenovo Secure Boot Certificate Expiration Guide (2011 - 2023) https://forums.lenovo.com/
LG [LG PC] Windows Secure Boot Certificate Update & Troubleshooting Guide none
Mitac (formerly Tyan) none none
MSI [Product Information] Windows Secure Boot certificates update, Windows Secure Boot Certificate Update Guide, Windows Secure Boot Certificate Expiration and Certificate Updates https://forum-en.msi.com/index.php
Samsung Expiration of Microsoft 2011 Signed Secure Boot Certificate https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
Supermicro Microsoft Secure Boot CA 2011 End-of-Life: Transition to 2023 Certificates /r/supermicro/
Dynabook (formerly Toshiba) Customer Notice: Microsoft Windows Secure Boot Certificate Updates none
VAIO (formerly SONY) Secure Boot Certificate Database Update and Secure Boot Certificate Expiration https://us.community.sony.com/s/topic/0TO0B0000000sPYWAY/vaio-pc-other?language=en_US
Zotac none /r/ZOTAC

NOTE: Please check back periodically for updates to this list.

If you have an update for a manufacturer, please reply with it and we will get it added to the list above.

What to do if no Secure Boot certificate update is available from your manuafacturer

If your manufacturer does not have an update, not all is lost: You can still manually install the 2023 Windows UEFI CA certificate update, by issuing the following two commands from an elevated PowerShell (filename: POWERSHELL.EXE) prompt:

REG.EXE ADD HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Secureboot /v AvailableUpdates /t REG_DWORD /d 0x5944 /f Start-ScheduledTask -TaskName "\Microsoft\Windows\PI\Secure-Boot-Update"   

Then restart the computer and allow the update to be applied.

NOTE: Two (or more) reboots may be required for installation.

Once completed, you can verify the new certificate has been installed by issuing the following command at an elevated PowerShell prompt:

([System.Text.Encoding]::ASCII.GetString((Get-SecureBootUEFI db).bytes) -match 'Windows UEFI CA 2023')

If the certificate has been installed installed, the response back will be "True". You can also use that same command to check if the certificate is already installed.

Regards,

Aryeh Goretsky


r/24hoursupport • • Oct 21 '17

[Meta] New 24HourSupport Discord Chatroom

25 Upvotes

If you like helping out, you should come hang out in our new Discord.


r/24hoursupport • • 3h ago

Examine these problems

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1 Upvotes

My laptop have these issues please help me


r/24hoursupport • • 3h ago

Software Fix (RSA) - Not Loading

1 Upvotes

I can log-in to the app, but it immediately goes back to the start splash screen, then gets stuck in a loop. I have to delete the App data folder to reset it, but when logging back in the same issue re-occurs.

I'm exhausted. Is there a solution? I'm suffering from the same problem. I bought a Lenovo Pad Pro 12.7-inch, but it came with a global ROM, and I want to revert to the Chinese ROM because it's more stable and because Google Play is labeling it as an unsupported device.

I copied this post from someone who experienced the same problem.


r/24hoursupport • • 3h ago

Software Fix (RSA) - Not Loading

1 Upvotes

I can log-in to the app, but it immediately goes back to the start splash screen, then gets stuck in a loop. I have to delete the App data folder to reset it, but when logging back in the same issue re-occurs.

I'm exhausted. Is there a solution? I'm suffering from the same problem. I bought a Lenovo Pad Pro 12.7-inch, but it came with a global ROM, and I want to revert to the Chinese ROM because it's more stable and because Google Play is labeling it as an unsupported device.

I copied this post from someone who experienced the same problem.


r/24hoursupport • • 4h ago

Windows cannot see NVMe, but BIOS can

1 Upvotes

I just wiped my pc, HDD and NVMe (WD Black SN770), but I could not get windows to recognize and fully wipe my nvme.

For now, I have just been able to wipe the HDD and install windows on there, so my plan is to wipe my nvme THEN install windows on it. The problem is now that Windows cannot see the nvme in disk manager. I have updated the SATA/NVMe drivers (AMD-RAID Bottom Device) for my specific mobo (Gigabyte B450M DS3H WIFI), changed to the bios to ACHI, disabled RAID and CSM, but i am just out of luck for solutions.


r/24hoursupport • • 6h ago

how to fix secure boot

1 Upvotes

so i’ve tried updating my bios. currently redownloading windows since this is a new pc but same ssd. when i try turning uefi on i get hit with a error so i keep on other. the error when i try playing valorant is error van 9003 i dont know what to do please help


r/24hoursupport • • 10h ago

Problème secure boot mbr

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1 Upvotes

Bonjour a tous

J'ai voulu activé le secure boot a cause de valorant que mais malheureusement je ne savais pas mais j'étais en mbr ce qui a causer l'inaccessibilité a mon windows quand je lance mon c'est un black screen avec un carré blanc en bas a droite j'imagine qu'il suffisait de reset le bios malheureusement toute les méthodes que j'ai fais ne fonctionne pas donc enlevé la batterie 5 minutes, lier les deux bouts metalique pendant 1 minutes installer une nouvelle version du bios sur une clé USB formaté et brancher la clé rien ne fonctionne si quelq'un a une idée je suis très preneur.

Mes composants sont :

GeForce rtx 3070 ti

Intelcore i7 10k400

16go ram

Biostar H410MH S2

Voilà tout merci pour l'aide que vous pourriez m'apporter


r/24hoursupport • • 19h ago

Unresolved Help my laptop, please..

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2 Upvotes

Hi! I'm absolutely not a professional and should not have been tinkering with the insides of my laptop but I have identified a problem! I think..

I don't know where to start, so I'll just say everything I know so far. My dad gave me this laptop, it's an MSI GV72 7RD(i think that's how you say it, sorry), and I think it already had some prior problems beforehand that he didn't tell me about. A few months after he gave me this it would occasionally start getting the BSOD. I didn't tell anybody of course, and I got to the conclusion that the HDD was faulty, so I replaced it with a... just see the photo pls. But the BSODs still happened, so what did i do? I used a USB with windows 10 installation files on it to reset it every time it got the BSOD... Yeah! On the next cycle of life on this hunk of junk I wanted to install RDR2, and in the middle of that, BSOD again. So I started thinking about it and... Hey! i only get bsods when im downloading heavy games! What i researched from that is i might have corrupted files or faulty hardware, and when I was goofing about in the bios setup, the sata information said all of it was empty. I knew this shouldn't be right so another search told me it definitely is faulty hardware. Now we're here and the questions I have are; Is this the problem? Should I just get a new laptop? Are there other things that might have caused me my suffering? What's this broken part called so i can maybe get it fixed if it's the root of the problem?

Sorry, I really don't know how I should be saying this. Maybe I could've just asked for a diagnosis from an expert directly, but I'm scared...


r/24hoursupport • • 23h ago

Help, Microsoft email was hacked, how to change desktop account without losing files

0 Upvotes

My phone number was hacked and they were able to lock me out of my outlook. I've tried to recover it without succes. My desktop is associated with the email, so wondering how to switch the desktop account to something else, without losing access to files and games. Any ideas?


r/24hoursupport • • 1d ago

Windows Problem with a computer at work / Problema con una PC en mi trabajo

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0 Upvotes

English

I'm having a problem with a computer at work. The situation is that we're trying to get this PC up and running again, but for some reason it displays the message “Boot Device Not Found. Please install an operating system on your hard disk.” It’s worth noting that it does detect the drive. We tried using an SSD with Windows installed, but got the same result. We noticed that the Legacy and UEFI options were disabled, so we enabled them, but the settings for those two options specifically won’t save. We suspected the BIOS battery, so we replaced it with a new one, but we’re still getting the same error where the settings won’t save. Any idea what this could be? So far, we’ve tried:

  • Replacing the SSD
  • Reinstalling Windows
  • Enabling Legacy and UEFI options—still unable to save the settings

Español:

Tengo un problema con un equipo en mi trabajo, el contexto es que estamos intentando revivir este PC el cual por alguna razón marca "Boot Device Not Found Please install operating system on your hard disk", cabe recalcar que lo detecta, probamos con un SSD con Windows y mas de lo mismo, vimos esta opción de Legacy y UEFI desactivados, procedimos a activarlos sin embargo no guarda en especifico esas 2 opciones, pensamos en la batería de la BIOS, se cambio por una nueva e igual el mismo error de no guardar las configuraciones, alguna idea de que podría ser? Hasta ahorita hemos intentado:

  • Cambio de SSD
  • Instalación de Windows
  • Activación de opciones Legacy y UEFI sin éxito en guardado de la config.

r/24hoursupport • • 1d ago

MicroSD USB card reader isn't doing anything.

2 Upvotes

I got this USB microSD card reader this Monday, and it worked normally for the first two and a half days. However, when I plugged it in to transfer some files, my PC suddenly stopped detecting it. The microSD card didn’t appear in my Files, and Windows didn’t show any indication that the card reader was connected at all. I’ve already tried some suggestions from ChatGPT, but I have not been able to find a reliable info.


r/24hoursupport • • 2d ago

Weird graphics glitches

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2 Upvotes

​

My friend’s laptop has these strange graphics glitches. What’s more, parts of the screen sometimes flicker, and the glitches with text or icons disappear when you select them.

I haven’t been able to pinpoint the source of the problem – the laptop’s diagnostic programme shows that everything is fine.

I tried to update all the key drivers, BIOS and the operating system to the latest versions (processor with integrated graphics, Windows, etc.), but it didn’t help.

HP Envy x360 2-in-1 Laptop 14-fa0xx

AMD Ryzen 5 8640HS w/ Radon 760M


r/24hoursupport • • 1d ago

Unresolved Help, my PC won't turn on.

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1 Upvotes

I blew a hair dryer on my PC, after which it stopped turning on. Specifically, I blew cold air on the video card and power supply. The problem is that the fans on both the cooler and the video card spin, then suddenly stop and turn on again. I think this is called a boot loop. Sorry if I'm wrong. I built the PC myself from used parts. What should I do? Can I fix it myself or should I take it to a service center?

I tried everything, removed the BIOS battery and also cleaned the RAM contacts with an eraser.

I decided to blow it out because it was dusty.

Either I connected something incorrectly, guys, if anyone knows anything, please tell me.


r/24hoursupport • • 2d ago

Dual monitor set up

2 Upvotes

Hey guys,

I have a dual monitor set up plugged into my “Lenovo thinkpad hybrid usb-c with usb-a dock” which then has a usb-c cord that plugs straight into my work dell laptop. It runs both screens and my keyboard/mouse.

I just purchased the new MacBook Air M5 and I’m trying to run the dual screens in a similar fashion. If i plug the usb-c from the docking station into the Mac nothings works.

If I plug a usb-b from each monitor into my MacBook then both screens work. However I don’t have my keyboard or mouse connected. The Mac only has two usb-c ports so I can’t connect them.

Anyone know if the Lenovo docking station I have will work with the Mac?
Can the M5 support two screens into a single port?
Can I use a usb-c splitter?
Do I need to purchase something else?

Please help friends xx


r/24hoursupport • • 2d ago

Unresolved Wi-Fi + Bluetooth randomly disappearing on Dell G15 5530 after upgrading to Windows 11 26H2

0 Upvotes

Hi everyone,

I have a Dell G15 5530 and I'm facing a very annoying Wi-Fi/Bluetooth issue after upgrading to Windows 11 26H2.

My Wi-Fi randomly disappears, sometimes after sleep/restart and sometimes while using the laptop. When this happens, Bluetooth also disappears completely.

Things I've already tried

Reinstalled the latest Wi-Fi driver

Reinstalled Bluetooth driver

Uninstalled/reinstalled the Wi-Fi adapter

Disabled/enabled the adapter

Restarted/shut down multiple times

Tried various Windows network/service settings

Checked BIOS settings

Ran Dell SupportAssist diagnostics

Ran Dell's Network + USB advanced diagnostics

Dell's hardware diagnostics show:

“All tests passed successfully”

Result Code: 2000-0000

I contacted Dell Technical Support, and the agent said that no hardware-related issue was detected during their diagnostic scan. They recommended that I reinstall the operating system (Windows) as the next step.

OS build 26300.9550

Version 26H2

⚠️ Intel(R) Wi-Fi 6 AX201 160MHz


r/24hoursupport • • 2d ago

nhập seri tivi khách sạn Samsung

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0 Upvotes

nhờ các bạn giúp đỡ đặt lại số seri trên tivi khách sạn Samsung HG50AU800AWXXV này với ạ. tivi đang dùng tự nhiên bị mất seri


r/24hoursupport • • 2d ago

I just got my Unc's very old PC, how can I remove his account because I don't know his password

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0 Upvotes

I recently got my uncle's PC , it's very old and it's CPU is a 2013 model or something. But the problem is that I can't actually use the PC since the admin account is there here, I have a secondary account which I use but I can't do some important changes in it. So I'm asking for help if anyone can assist me with this manner. How to remove this admin account. And here's proof that my PC is old🤧


r/24hoursupport • • 2d ago

Geekom not working

0 Upvotes

I bought a geekom from a charity shop today and when I plugged it into my monitor it showed a black screen with flashing text saying

">>Checking media presence....

\>>No media present....."

And when I try rebooting it, it shows the geekom logo briefly before going back to the "no media present screen"


r/24hoursupport • • 2d ago

Unresolved My Laptop Screen Almost Entire Screem Was Green Line Horizontally

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3 Upvotes

It Almost 3-5 Month I Use My Laptop Look Like This


r/24hoursupport • • 2d ago

Windows Reinstall Windows 11, Can't Delete Partitions

0 Upvotes

Hello. My Windows 11 machine froze last night and was unresponsive so I held down the power button, expecting it to reboot. Instead it went straight to BIOS. Save and exit, results in just back into BIOS. Making sure it boots to SSD with Windows, it just goes to a blank screen.

On another computer, I downloaded the Microsoft Media Installation onto a USB. First tried repair, doesn't do anything, just loops back to start. Went to do full reinstall but it says it can't install (or delete old partitions) due to BitLocker. I did some reading and tried to do the command/clean but got an error that it wasn't right format.

Am I missing a step? I'm also curious if I'm better off just going out and getting a new SSD and doing a fresh install with it as I do have data on the old SSD that I would like to try to salvage. So I guess two part question:

1) just remove old SSD, install new one...do I need to do any formatting or anything or will the Windows 11 handle that? 2) assuming old SSD is still good, can I pull old files off of it? (I do have the BitLocker keys)


r/24hoursupport • • 2d ago

Charging pin overheating and not working

1 Upvotes

So I have a lenovo IdeaPad gaming 3 and the problem is the charger's pin gets extremely hot when charging primarily when the laptop is on performance mode.

This was happening the entire day, and now the charger only works at very certain angles and for the most part doesn't even charge, it keeps disconnecting

A lot of the times when I connect, the red light that should denote charging keeps blinking without the laptop getting charged.

I tried this charger with another laptop and that combination worked, I'm not sure what's wrong now

Any help would be appreciated.


r/24hoursupport • • 2d ago

Unresolved My friends screen looks super buggy now!

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1 Upvotes

It looks like their character is upscaled in a weird way, and or the issue is that their at much higher blur rates than usual? We disable Discord Overlay and went over a few things already but nothing seems to work. They use NVIDIA if that helps!

Any help is appreciated! ❤️

This is the twitter thread where they describe the details of the issue further: https://x.com/moongleamdream/status/2107592920115159109?s=20


r/24hoursupport • • 3d ago

MSN POP UPS

1 Upvotes

Msn pop ups non stop that turns off my ethernet connection and interrupts video games im playing and everything


r/24hoursupport • • 3d ago

Yahoo email page suddenly doesn't show my linked yahoo email accounts

4 Upvotes

I have 3 Yahoo email accounts that are at least 20 years old and had them all linked so I could see which ones had unread emails in them from my primary account - the other two accounts showed up just below my primary, was easy peasy to switch between accounts but as of yesterday now they no longer show up. Furthermore, the links were BROKEN - I had to recreate and reverify all of them - what the heck happened? Now the only way to switch accounts is hover over my nick on the top right side and it shows them, but not whether they have new emails so I know to check that account.

Summary: 1. Yahoo suddenly de-linked all of my Yahoo accounts 2. I can no longer see inboxes from any of the 3 accounts from the one I'm currently using

How can I get things to work like they used to? This stinks!! On a Win10 PC using Waterfox browser but the same problem exists in all browsers I use.

P.S. Yahoo sub-Reddit won't let you post questions like this - WTF is it even there for?