WhyCrashed

atikmdag.sys

AMD — Radeon display driver (legacy naming)

When blamed in a crash: Very likely the true cause

What to do

The AMD Radeon display driver. Clean reinstall with the newest (or last stable) version.

  1. Download the newest driver for your GPU from AMD.
  2. Remove the current driver with DDU in Safe Mode.
  3. Install fresh; if crashes began after an update, use the previous WHQL version.

Official download (the vendor's own site — never use third-party "driver download" sites):
https://www.amd.com/en/support/download/drivers.html

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