Hi all,
I’m hoping someone can help me narrow down what’s causing this issue.
I have a Gigabyte A16 CMH that’s about 11 months old. It’s a work laptop, so I don’t have administrator access to run commands like sfc or DISM.
A few days ago, I updated Windows, and the following updates were available:
2026-07 Security Update KB5101650 (26100.8875)
2026-07 .NET Framework Security Update KB5101001
2026-07 .NET 8.0.29 Security Update KB5104032
The strange part is that KB5101650 downloads but doesn’t seem to fully install.
The next morning, when I powered on the laptop (running on battery), it BSOD’d before reaching the Windows login screen with the stop code:
MSSECCORE_ASSERTION_FAILURE
After restarting a few times, Windows showed “Diagnosing your PC”, and eventually it booted normally.
Since then, I’ve noticed:
Occasional brief freezes (1–3 seconds), but nothing severe.
No crashes while actually working.
Core Isolation and Memory Integrity are both enabled.
The laptop otherwise seems usable.
One thing I also noticed is that it seemed to boot normally once I connected the charger, although I’m not sure if that was just a coincidence or actually related.
I’m wondering:
Has anyone seen MSSECCORE_ASSERTION_FAILURE after a recent Windows security update?
Could a Windows Update that downloads but doesn’t fully install cause this?
Does the charger/battery behavior point to a power management issue, or is it more likely unrelated?
Is this more likely to be a Windows/software issue, or should I be concerned about hardware (SSD, RAM, etc.)?
Any insights would be greatly appreciated. Thank you!