Quick Answer

A ROG Ally X that shuts down after Windows updates usually has a power-management or driver setting the update changed — reinstall the latest AMD drivers, update Armoury Crate and BIOS, and check that fast startup and aggressive sleep settings are not cutting power. If shutdowns began with one update, roll it back.

Why post-update shutdowns happen

An update can alter power-management settings, replace the AMD driver with a generic one, or introduce a firmware conflict that triggers a protective shutdown. The Ally X depends on ASUS-validated drivers and Armoury Crate for stable power behaviour, so a generic post-update driver can cause cut-offs under load. When shutdowns start right after updating, the update is the likely trigger.

Step-by-step fix

Reinstall the latest AMD chipset and graphics drivers, and update Armoury Crate and the BIOS from ASUS support. In Windows power options, review sleep and fast-startup settings that an update may have changed. Set the Performance 25W profile to reduce power-load instability and use the official charger. If shutdowns started with a specific update, uninstall it from Windows Update history and pause updates until a fix arrives. Persistent shutdowns on clean drivers warrant a service check.

FAQ

Why does my ROG Ally X shut down after a Windows update?

The update likely changed power settings or replaced the AMD driver. Reinstall the AMD drivers, update Armoury Crate and BIOS, and review Windows power options.

Should I roll back the update?

If shutdowns began right after a specific update, yes. Uninstall it from Windows Update history and pause updates until ASUS releases a fix.

Does the charger matter for post-update shutdowns?

Yes. Combine the driver fix with the official ASUS charger and a quality cable, since underpowered charging can compound shutdown issues under load.

TIP

Try this first

Reinstall AMD drivers and check Windows power settings after the update; roll back the specific update if shutdowns began with it.