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NVIDIA Overlay blackscreen kill

NVIDIA Overlay (GeForce Experience Share) periodically creates fullscreen black windows causing desktop blackout and taskbar animation. Kill the process (nvsphelper64/nvcontainer), not just the HWND.

user/developer
screensavernvidiaoverlayblackscreendesktopgeforce

Steps

  1. SYMPTOM: desktop periodically goes black, ta...
  2. DETECT: wkappbot screensaver close logs [SCR...
  3. Where CPU -gt 50
  4. KILL SESSION: Get-Process NVIDIA Overlay -EA...
  5. Stop-Process -Force. Get-Process nvcontainer
  6. Sort CPU -Desc
  7. Select -First 2
  8. Stop-Process -Force
  9. PERMANENT FIX: GeForce Experience -> Setting...
  10. INTEGRATED: screensaver close (v7.3.193+) au...
  11. WKAPPBOT_NO_SCREENSAVER=1 disables periodic...
  12. SCREENSAVER SELF-WIPE: ScreenSaverOverlay.Li...
  13. BUG FIX 2026-05-27: WipeBlockingOverlays() w...
  14. DETECTION FIX 2026-05-27: WipeBlockingOverla...
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