Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

jvlfilms

macrumors 6502
Original poster
Dec 11, 2007
269
231
Staten Island, NY
Hello guys

This is kind of a technical question so I'm not sure if this can be answered but I figured I'd give it a shot. I use a Razer KBM combo on my cMP that has both Windows 10 and macOS. When the keyboard is plugged in to macOS, it boots up perfectly fine. But when entering Windows 10, I get a blinking dash in the top left corner until I pull out the cable, then it proceeds as normal. Is there any particular reason why this would happen when plugged into a USB 2.0 port? I can't imagine why Windows 10 wouldn't be able to boot up when a keyboard was plugged in.

Any ideas, and better yet - how to fix it?
 
Any ideas, and better yet - how to fix it?
Based on this thread Razer products causing a boot loop, its quite possible to due a an EFI setting that you won't be able to change, and that EFI setting is in conflict with the Mac. Its just one of those oddities with Macs running windows, I've always ran into minor annoyances and headaches with Macs and windows, this would also fall into that category.
 
  • Like
Reactions: jvlfilms
Based on this thread Razer products causing a boot loop, its quite possible to due a an EFI setting that you won't be able to change, and that EFI setting is in conflict with the Mac. Its just one of those oddities with Macs running windows, I've always ran into minor annoyances and headaches with Macs and windows, this would also fall into that category.

Thanks for the thread/info! I have a USB extension cable which I use to unplug the keyboard whenever I'm booting into Windows, which is not super often so it's okay. But thanks for the help with the resolution!
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.