I have a Corsair Strafe RGB keyboard that is unresponsive (flashing scroll lock from power on until the login screen comes up) with any BIOS version after 7003. I can plug in an old wireless Logitech keyboard and access the BIOS but I like to dual boot Windows and Linux, which means I'm stuck booting into whatever GRUB has as the default unless I haul out the wireless keyboard. I've tried 7106, 7201 and now 7403. The fix, according to support, was to go back to a previous version, but for this kind of issue to persist after four new BIOS versions have been released is just baffling. Do I have a defective board?

Edit: It's something specific to either that keyboard or Corsair in general. Replaced it with a different keyboard (HyperX Alloy Elite RGB) and everything is back to working like it should. 😞