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February 17th, 2026 07:12
16X Aurora AC16251, persistent overheating despite service, is motherboard replacement reasonable?
Hi everyone,
I purchased an Alienware 16X Aurora AC16251 towards the end of September last year. Since early ownership, I have been facing persistent thermal concerns.
During light workloads (browsing, YouTube, MS Word) in Balanced mode, the CPU temperature frequently spikes into the 90–95 °C range, sometimes touching higher values. During gaming in Performance mode (with overclocking disabled), the CPU regularly reaches the maximum listed temperature for the Core Ultra 9 275HX (105 °C).
Initially, I assumed this might be normal behavior for a gaming laptop based on blogs/posts about gaming laptops on the internet. But I was beginning to be concerned. Based on Dell advisories, and I followed the recommended steps to reduce overheating.
However, the situation has not improved. The system has also restarted a couple of times. On one occasion, I encountered the BSOD: VIDEO_MEMORY_MANAGEMENT_INTERNAL (0x10E).
After reinstalling both Intel and NVIDIA graphics drivers, this specific error has not reappeared, but the thermal behavior remains unchanged. Even during mundane tasks, temperatures fluctuate rapidly and remain elevated (typically 75–95 °C; 95 °C because it is capped at that via AWCC).
Service history:
I reported the issue to Dell support.
1) The cooling assembly (heatsink + fan) was replaced.
2) BIOS and drivers are fully up to date.
Result: No meaningful improvement. During the second visit, the technician documented that despite heatsink and fan replacement, the overheating issue persists. The root cause was not diagnosed, and the motherboard was only suspected as a potential cause.
Dell is recommending motherboard replacement as the next step. My concerns are:
1) The system reaches very high temperatures even under light load.
2) Cooling assembly replacement produced no improvement.
3) Motherboard involvement has not been technically established.
4) A motherboard swap is a major hardware intervention.
At this stage, I would greatly appreciate input from experienced users and moderators regarding the following:
1) Is it normal for the Aurora 16X (Ultra 9 275HX) to spike into the 90–95 °C range during light workloads in Balanced mode?
2) In your experience, how often does a motherboard replacement actually resolve thermal/restart issues on Alienware laptops?
3) Would you consider proceeding with the motherboard replacement reasonable at this stage?
4) Are there additional diagnostics I should request before authorizing such a major repair?
I am trying to resolve this constructively and want to make an informed technical decision before proceeding with any further hardware replacement. Thus, any insights from the community would be greatly appreciated.
Thank you.
DELL-Jesse L
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February 17th, 2026 08:02
Click here for troubleshooting and resolving overheating issues with your system.
Contact Dell GHN (Get Help Now) chat technical support Monday through Friday. Click the blue "Get Help Now" on the right to start a private live chat session. Share the private Service Tag with them so that they can verify the ownership and warranty status. This will also generate a unique Technical Support case for your unique Service Tag. If already out of warranty, click here for the Dell out of warranty offering.
The_Slayer
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February 21st, 2026 07:07
@DELL-Jesse L
Hi,
I already have an active support case and onsite service history associated with my Service Tag. I am currently working with Dell Support regarding the persistent thermal behavior following the cooling assembly replacement.
I am sharing HWiNFO64 screenshots under the following conditions:
-> AWCC mode: Balanced (unless otherwise noted)
-> Power state: Plugged in
-> Ambient temperature: ~ 27 °C
-> Workload: Light to moderate usage (browsing, YouTube, MS Word, LaTeX)
Key observations from HWiNFO:
1) CPU package temperatures frequently spike even under light workloads.
2) The sensors intermittently report thermal throttling flags, which is my primary concern.
The cooling assembly (heatsink + fan) has already been replaced by Dell, with no meaningful change in behavior.
Questions for the community:
1) For Aurora 16X / Core Ultra 9 275HX owners, is it expected to observe frequent thermal throttling during light workloads in Balanced mode?
2) In your experience, when thermal throttling persists even after a cooling assembly replacement, how often does a motherboard replacement actually resolve the issue?
3) Are there any additional diagnostics (BIOS settings, power limits, sensor checks, stress methodology, etc.) that you would recommend running before proceeding with a major board-level replacement?
I appreciate any technical insight from experienced users or moderators.
Thank you.
The_Slayer
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February 25th, 2026 06:34
Gentle follow-up on this thread.
I am still concerned about the intermittent thermal throttling behavior under light workloads. I already have an active Dell support case in progress and am seeking additional technical perspective from the community.
If there are any specific logs, sensors, or stress tests that would help with diagnosis, please let me know and I would be happy to capture and share the requested data.
In particular, feedback from Aurora 16X users with the Core Ultra 9 275HX on expected idle/light-load thermals and throttling behavior would be very helpful.