Valorant Vanguard vgk.sys Blue Screen Crash Fix 2026
Fix SYSTEM_SERVICE_EXCEPTION and PAGE_FAULT_IN_NONPAGED_AREA BSOD caused by Riot Vanguard vgk.sys. Step-by-step TPM 2.0, Secure Boot, and Core Isolation conflict resolution.
Lab Hardware Spec Snapshot
Resolving the Kernel-Level Vanguard Conflict
Riot Vanguard operates as a Ring 0 kernel driver. On Windows 11 systems with Memory Integrity (HVCI) enabled or outdated motherboard UEFI BIOS versions, driver signature validation can fail, triggering an instant blue screen of death (BSOD).
Step 1: Verify UEFI Secure Boot & TPM 2.0
Press Win + R, type msinfo32, and verify that BIOS Mode is set to UEFI and Secure Boot State is On. If either is disabled, restart into your BIOS to enable AMD fTPM / Intel PTT and Secure Boot.
Marcus Thorne
Senior Systems Engineer Lab Bench VerifiedAll benchmarks and crash reproductions are conducted in our controlled hardware lab across standardized AMD AM5 and Intel LGA1700 test benches using clean Windows 11 installs.