1 Rookie
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5 Posts
17
1177
September 7th, 2025 14:24
BIOS Update Causing Shutdown Failure – Dell G16 7630
I own a Dell G16 7630. After applying the latest Dell-released BIOS update, my laptop will no longer shut down properly – selecting “Shut Down” causes a restart every time.
This is not a Windows or configuration issue:
Fast Startup is disabled.
Drivers, chipset, and firmware are fully up to date via SupportAssist.
Shutdown from both the lock screen and command line fails the same way.
Event logs confirm the system is receiving a restart instruction from firmware.
This issue began immediately after the BIOS update and cannot be rolled back due to Dell’s lock on earlier versions. It is therefore a BIOS regression introduced by Dell’s own update, not a hardware or warranty matter.
I will not purchase extended support post-warranty to resolve an issue caused directly by Dell firmware.
I require escalation and resolution of this problem. If Dell cannot provide a fix by 15 September 2025, I will contact my bank to initiate a recall of the funds for the laptop purchase, and Dell may then arrange collection of the device at its convenience.
Please confirm the next steps.



ALEXding
1 Rookie
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41 Posts
5
September 22nd, 2025 00:47
@DELL-Nat M
Issue Analysis – Shutdown Problem Linked to USB 3.1 Controller / PCIe Root Port
After extensive testing, I’ve identified that the shutdown/restart issue is not solved by simply downgrading the BIOS to 1.22 — the problem still occurs.
When the USB 3.1 controller is enabled in Device Manager, the system does not shut down properly and instead restarts.
When I disable the USB 3.1 controller, the system is able to shut down normally.
Similarly, when I disable Intel(R) PCI Express Root Port #21 - 7A44, the system also shuts down normally.
This clearly shows that the bug is linked to the USB 3.1 controller / PCIe Root Port power management in the BIOS (v1.26.1 and even 1.22).
The affected devices are not being powered down correctly during the shutdown sequence, which causes the system to trigger a restart.
Temporary workarounds:
Disable the USB 3.1 controller in Device Manager.
Or disable Intel(R) PCI Express Root Port #21 - 7A44.
Impact:
Disabling these devices makes USB 3.1 ports (and potentially other devices on that root port) unusable.
Downgrading to BIOS 1.22 does not solve the issue.
Conclusion:
This is not a hardware defect from the user’s side, but a clear BIOS-level bug affecting power management of the USB 3.1 controller and PCIe Root Port.
Dell needs to release a corrected BIOS version to properly fix this behavior.
lopezescandell
1 Rookie
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2 Posts
0
October 2nd, 2025 11:31
Dell G16 7630 – Shutdown Bug Diagnosed and Solved by Removing SupportAssist
Hi everyone,
I’d like to share my full troubleshooting journey with the Dell G16 7630, which was affected by a persistent shutdown bug. The system would restart instead of powering off, even when idle, cool, and connected to the original charger.
Initial Symptoms
Shutdown triggered a fan surge and unexpected reboot
BIOS logs showed
Thermal No POST Recovery – Method 1 ExecutedDell diagnostics returned error
2000:8135(charger not detected) despite proper connectionDisabling USB 3.1 controller and PCIe Root Port #21 did not solve the issue
Downgrading BIOS to v1.22 had no effect
Troubleshooting Steps
Verified thermal and power status using PowerShell and BIOS logs
Disabled USB 3.1 controller and PCIe Root Port #21 in Device Manager
Tested shutdown via script:
shutdown /s /f /t 0Restored BIOS to factory defaults using “BIOS Defaults” option
Confirmed Modern Standby (S0ix) was active
Uninstalled Dell SupportAssist using PowerShell and manual cleanup
Resolution
After uninstalling Dell SupportAssist, the system began shutting down cleanly. No fan surge, no reboot, no BIOS recovery logs. This confirms that SupportAssist was interfering with the shutdown sequence, likely through background services or scheduled tasks.
Cleanup Steps
Removed SupportAssist via PowerShell:
Deleted residual folders and registry keys
Verified USB and PCIe devices were re-enabled and functioning:
Final System State
BIOS v1.26.1 (July 15, 2025)
SupportAssist fully removed
USB 3.1 and PCIe Root Port #21 re-enabled
Clean shutdown confirmed
No thermal or charger errors
Windows 11 Pro 23H2
SK Hynix BC901 SSD (firmware 5109T51)
Recommendation
If you're facing similar shutdown/restart issues on the G16 7630, try removing SupportAssist completely. Dell should investigate how SupportAssist interacts with BIOS-level power logic and Modern Standby.
Hope this helps others. Feel free to ask if you want scripts or logs.
Best regards
DELL-Nat M
Community Manager
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3.3K Posts
0
October 3rd, 2025 18:44
Dell has released a new BIOS update for the Dell G16 7630 as of today. This update is intended to address issues reported with previous versions, such as shutdown failures.
What to Do:
Your input is valuable to confirm the effectiveness of this update.
Thank you for your collaboration!
Lele92
1 Rookie
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2 Posts
1
September 8th, 2025 21:40
Dear Dell,
I am experiencing the same issue after applying the latest BIOS update on my Dell G16 7630. Since the update, the laptop will no longer shut down properly: every attempt to select “Shut Down” results in an automatic restart, regardless of Windows settings or the shutdown method used.
To clarify:
Fast Startup is disabled.
All drivers, firmware, and updates are already installed via SupportAssist.
The abnormal behavior appeared immediately after the BIOS update.
At present, the only way to turn off the system is by holding down the physical power button, which is not an acceptable or sustainable solution. This confirms that the issue is caused by the recent BIOS release, not by Windows configuration or hardware.
I therefore request a prompt resolution from Dell, as this regression significantly impacts system usability. It is essential that Dell addresses this issue as quickly as possible in order not to lose credibility and future customers, since it is unacceptable for a problem of this nature to be introduced on a laptop in this price range.
Please confirm the next steps.
(edited)
Ian_42
1 Rookie
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3 Posts
2
September 9th, 2025 07:15
I also have the same problem and have been through the same as everyone else trying to fix this.
I am an electronic engineer by trade and thus write lots of code similar to BIOS firmware and let me say this is an absolute disgrace. There is NO way this should have made it through product verification prior to release unless these problems were intended which I hope was not the case. The fact that you have blocked the ability to downgrade this release of firmware is of concern to me, again for a company like Dell this is extremely poor.
This is not my first experience of Dell laptops and their problems but this is the first (and possibly last) time I have owned one myself.
On the first reset the fans max out which probably means the processor is maxed out as well judging by how hot the machine gets, this not good for the longevity of my device. Subsequent reboots don't do this.
My current solution is to enter BIOS after the reset and power down from there.
As per the previous comments, this needs fixing now!
Thom985
1 Rookie
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7 Posts
2
September 9th, 2025 07:59
I have exactly the same issue as you do, it begun after i updated to the latest version of the bios, I was going crazy thinking that it could be a configuration of windows that have changed aftet the bios update but it ended up being the faulty bios that you released, i can't believe i can't turn off my pc now, also the performance have experienced a downgrade, doing multitasking, the system becomes to get frozen like the processor couldn't handle all the programs working at the same time, so i have to close one or two programs to stabilize the system, it's unnaceptable by any means cause i also tried to make a bios downgrade and i realized that you blocked the abbility to do it.
Solve this problem as soon as you can and stop letting the people to download this faulty update before getting the same problem as us.
Lele92
1 Rookie
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2 Posts
1
September 9th, 2025 12:19
I tried to contact Dell technical support, but the call gets disconnected after a few minutes of waiting. I’m speechless. A high-cost PC that I can’t shut down without forcing it with the power button, risking damage to the operating system.
Ben_6489
1 Rookie
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5 Posts
1
September 9th, 2025 14:37
<Duplicate post merged to original thread. DELL-Admin>
(edited)
Thom985
1 Rookie
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7 Posts
1
September 10th, 2025 07:59
You already have taken off the faulty bios from your support site but you should let us downgrade to the people that have already installed it, i have had lots of problems with my pc, is not just the fact that it restarts when i wanna shut it down but also that i can't even watch videos or listen music on my pc cause dunno what it does to the cpu that it takes it to the limit and the pc gets frozen while watching videos or listening to music, the mouse gets laggy like i was doing very heavy tasks and i can't believe a pc with such specs would get overloaded just by listening to music, so you should rename the old bios to let us get it back or do anything else to help us all with this problem.
DELL-Nat M
Community Manager
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3.3K Posts
0
September 10th, 2025 12:48
Hi everyone,
We’re currently checking on this with our engineering team. Thanks for your patience while we investigate!
Ph03n1x
1 Rookie
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1 Message
1
September 10th, 2025 15:41
@DELL-Nat M
Hello,
I am also experiencing the exact same issue. As soon as I updated my BIOS to 1.26.1, I can no longer shut down my computer. I also cannot use hibernate as it forces my laptop to restart as well. I also experience this weird bug where now my wattage is capping to 30w for the GPU. I’ve troubleshooted all of the same things (disable fast startup, checked firmware and drivers are up to date). I also cannot put my laptop to sleep and the only way to shut down is to press the power button for 15 seconds. Allow us to at least downgrade our BIOS as a temporary solution. Thank you and we all await your swift reply.
Adam
galver
1 Rookie
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1 Message
0
September 10th, 2025 17:14
Soy propietario de una laptop Dell G16 7630 con aproximadamente seis meses de uso. Desde que actualicé la BIOS a la versión 1.26.1, el equipo presenta un fallo al momento de apagarse.
Cada vez que selecciono la opción “Apagar” en Windows, el sistema no se detiene por completo: en lugar de apagarse, se reinicia automáticamente después de unos segundos. La única manera de detenerlo es manteniendo presionado el botón de encendido, lo cual no debería ser necesario en un equipo nuevo de esta categoría.
Este fallo está afectando directamente mi trabajo diario, ya que dependo de la laptop para mis actividades profesionales y no puedo confiar en un apagado normal del sistema.
Por ello, solicito a Dell:
Confirmación de que este problema ha sido identificado en el modelo G16 7630.
Instrucciones claras sobre cómo solucionarlo (por ejemplo, realizar un rollback a una versión previa de BIOS o esperar una actualización correctiva).
Los pasos a seguir dentro de la cobertura de garantía de mi equipo.
Confío en que Dell brindará una pronta solución, dado que se trata de un inconveniente grave en un equipo de alto rendimiento.
Allan500
1 Rookie
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1 Message
1
September 10th, 2025 17:48
I too have this issue (actually my sons laptop). Please can dell provide a solution to this as soon as possible - it seems to me by issuing this without sufficient quality assurance and testing that Dell may be held responsible for causing damage to our property if this is harming the operating system. I would liken it to being sold a new window and then the installer coming around a few months later and throwing a brick through it. Sorry, not meaning to sound unconstructive, but this is more than a mere inconvenience. Please provide a (tested and proven) solution promptly. (or alternatively I might consider a refund and switch to another model of laptop if you care to offer it). Allow us to at least downgrade our BIOS as a temporary solution please. Thank you.
(edited)
FedeC02
1 Rookie
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1 Message
0
September 11th, 2025 03:02
Voy a replicar las palabras del usuario "galver", ya que estoy atravesando la misma situación, lo cual es inaceptable para una computadora nueva de alto rendimiento. Y no me corresponde por el dinero que invertí, lidiar con estos problemas y ver como mi computadora se deteriora gracias a sus actualizaciones.
Soy propietario de una laptop Dell G16 7630 con aproximadamente seis meses de uso. Desde que actualicé la BIOS a la versión 1.26.1, el equipo presenta un fallo al momento de apagarse.
Cada vez que selecciono la opción “Apagar” en Windows, el sistema no se detiene por completo: en lugar de apagarse, se reinicia automáticamente después de unos segundos. La única manera de detenerlo es manteniendo presionado el botón de encendido, lo cual no debería ser necesario en un equipo nuevo de esta categoría.
Este fallo está afectando directamente mi trabajo diario, ya que dependo de la laptop para mis actividades profesionales y no puedo confiar en un apagado normal del sistema.
Por ello, solicito a Dell:
Confirmación de que este problema ha sido identificado en el modelo G16 7630.
Instrucciones claras sobre cómo solucionarlo (por ejemplo, realizar un rollback a una versión previa de BIOS o esperar una actualización correctiva).
Los pasos a seguir dentro de la cobertura de garantía de mi equipo.
Confío en que Dell brindará una pronta solución, dado que se trata de un inconveniente grave en un equipo de alto rendimiento.
donniedarko2001
1 Rookie
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1 Message
0
September 11th, 2025 18:52
If your button actions in Windows power setting is power button shut down, you can shut down by pressing the power button, but still not any other way. I found this out the hard way after frying a new SSD not realizing the laptop had started back up.