League of Legends crashes on PC rarely come with a clear error: some players drop to the desktop mid-game, others get a black screen, a “Failed to launch” message, or a Vanguard “system restart” prompt that never goes away. Riot’s support guides list a lot of possible fixes, but which one actually solved it on your PC?
Video: “K/DA - FIRESTARTER ft. MIYEON and SOYEON of i-dle, Sophie Powers, Mimi Webb (Official Music Video)”, official League of Legends channel (Riot Games), October 19, 2026, 3 min 27 s. K/DA music video (skins added in patch 26.22), not a troubleshooting video: https://www.youtube.com/watch?v=Mmw-PpWhKFg
What Riot Games Support suggests (pages read on November 11, 2026):
- No error code: restart, update GPU drivers and Windows, clean boot, reset NVIDIA/AMD software, lower video settings, reinstall. In League, “Enable Low Spec Mode” in the client settings (General tab).
- Overlays: Riot names Discord, OBS and Steam as software that can make League crash.
- “Your game requires a system restart to play” that keeps coming back: delete C:\Windows\vgkbootstatus.dat and restart; no virtual machines.
- “Failed to launch: Something unusual happened”: disable DevOverrideEnable (Riot guide), clean boot, firewall, GPU driver, reinstall the game and Vanguard.
- Laptops: force the game onto the “High performance” GPU in Settings > System > Display > Graphics. Overclocked PCs: return CPU/GPU/memory tuning to default.
- Riot does not tie these crashes to a specific patch and does not publish a list of affected hardware.
Questions for players:
- What exactly happens: crash to desktop, freeze, black screen, stuck on loading or lobby, “Failed to launch”, or the restart loop? Since when (a League patch, a Windows update, a new driver)?
- Which step finally fixed it? Closing an overlay (which one), switching a laptop to the dedicated GPU, removing an overclock or memory profile, deleting vgkbootstatus.dat, disabling DevOverrideEnable, Low Spec Mode, or a full reinstall?
- If you also play VALORANT: did a clean boot break Vanguard until you re-enabled the “vgc” service, as Riot warns?
- Did nothing work, and did Riot Support find the cause from your logs?
Please share your Windows version (10 or 11), CPU, graphics card and driver version, laptop or desktop, and what fixed it. Do not post account details or full logs publicly.
Guide: Riot’s official fixes for League of Legends crashes, black screens and launch errors: https://tricknfix.com/articles/league-of-legends-crashes-black-screen-or-wont-launch-windows-11-official-riot-fixes/
More League discussions: #league-of-legends (https://tricknfix.com/tags/league-of-legends/) · Windows 11: #windows-11 (https://tricknfix.com/tags/windows-11/)
Sources: Riot Games Support, “Troubleshoot PC Game Crashes” (October 28, 2025): https://support.riotgames.com/en-us/riot/performance/troubleshooting-game-crashes-pc ; “Fix My League: The First Steps to Tech Help” (May 18, 2026): https://support.riotgames.com/en-us/league-of-legends/performance/fix-my-league-the-first-steps-to-tech-help ; “How to Fix ‘Your game requires a system restart to play’” (March 9, 2026): https://support.riotgames.com/en-us/riot/gameplay/how-to-fix-your-game-requires-a-system-restart-to-play ; “Error ‘Failed to Launch: Something unusual happened…’” (May 14, 2026): https://support.riotgames.com/en-us/riot/account/error-failed-to-launch-something-unusual-happened ; “Use Your Dedicated GPU for Riot Games” (February 18, 2025): https://support.riotgames.com/en-us/league-of-legends/performance/updated-client-performance-issues-multiple-graphics-cards-on-windows ; “Temporarily Disable Overclocking” (October 22, 2026): https://support.riotgames.com/en-us/riot/performance/temporarily-disable-overclocking (all read November 11, 2026)
Image: official K/DA Hitmaker Evelynn splash art from the Patch 26.22 Notes (https://www.leagueoflegends.com/en-us/news/game-updates/league-of-legends-patch-26-22-notes/), © Riot Games
Version française : https://tricknfix.com/fr/sujet/league-of-legends-plante-ou-reste-sur-un-ecran-noir-sous-windows-11-overlay-gpu-du-portable-overclocking-ou-vanguard-en-boucle-qu-est-ce-qui-48b7c8da1a/