Cobra Pro won't turn on and isn't working!!! | Razer Insider
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Cobra Pro won't turn on and isn't working!!!

  • February 25, 2026
  • 0 replies
  • 12 views

I've never had a problem with my Cobra Pro since I bought it in 2023.

But last week, it simply stopped working out of nowhere. I did what most similar threads said: I put the mouse in bootloader mode, updated the firmware, and waited for it to charge (I thought it was a low battery). After some trouble, it started working again that same day.

Now today the problem has returned. I followed the same steps, but this time it's not working: the mouse disconnects from Windows when it reaches 99% of the firmware update.

Yes, I've already tried other USB ports, different cables, and even another PC without Synapse. Has anyone managed to solve this problem?