Razer Blade 15: Synapse 4 broke my FN key function | Razer Insider
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Question

Razer Blade 15: Synapse 4 broke my FN key function

  • May 27, 2026
  • 0 replies
  • 20 views

sleekBlueGreenDIAMOND841

After installing/updating Synapse 4 on my Razer Blade 15, my Fn shortcuts stopped working properly (media controls, brightness/display keys, etc.).

I’ve already:

  • Uninstalled/reinstalled Synapse
  • Restarted multiple times
  • Updated Windows/drivers

Nothing fixed it. Regular keyboard keys still work, just the Fn functions are broken.