How to fix "Your pc ran into a problem and needs to restart" after system update

A boot loop like that after a Windows update is often caused by a corrupted update, a damaged system file, or a driver that isn't loading correctly.

Since F8 usually doesn't work on Windows 11, try forcing Windows Recovery Environment (WinRE) instead. Power the laptop on, then hold the power button to shut it off as soon as the spinning dots appear. Repeat this 3 times, and on the next boot Windows should enter Advanced Startup.

From there, I'd try these in order:

1. Uninstall the latest quality update (or feature update if that's what was installed).
2. Run Startup Repair.
3. Open Command Prompt and run:sfc /scannow /offbootdir=C:\ /offwindir=C:\Windowsfollowed by:chkdsk C: /f(It may ask to run on the next restart.)
4. If you have a System Restore point, restoring to it is worth trying.

If none of those work, creating a Windows 11 installation USB on another PC and booting from it gives you access to the same recovery tools, and you can also perform an in-place repair (if Windows is still detectable) without necessarily losing your files.

One question: when the blue screen appears, does it show a specific stop code (for example, CRITICAL_PROCESS_DIED, INACCESSIBLE_BOOT_DEVICE, or SYSTEM_THREAD_EXCEPTION_NOT_HANDLED)? That code can narrow down whether it's an update, storage, or driver issue.