amdkmdag.sys
AMD — Radeon display driver
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.
- Download the newest driver for your GPU from AMD.
- Remove the current driver with DDU in Safe Mode.
- 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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