Cant go into developer mode chromebook 3100 2in1

System Details

  • Device: [Dell chromebook 3100 2in1 octopus grabbiter]
  • OS: [ChromeOS]
  • Firmware Type: [Stock]
  • Firmware Version: [149.xx]
  • Internal storage type: [SATA, NVMe, eMMC, UFS] (if applicable)

Summary of the Issue

I cant go into developer mode on my chromebook. I go into recovery screen with esc + refresh + power button. It takes me to a screen with place a recovery usb or sd card. Firstly my own chromebook keyboard doesnt respond to anything in this screen at all. I needed to plug in a extern keyboard. Then i did ctrl + D it ook me to the screen with press enter to turn off OS verification. I press enter it does nothing it only beeps. Please help me guys.

Expected Behavior

It shod have just restartes my chromebook in dev mode after i pressed enter.