To Wipe your Chromebook follow these steps (1) Turn off the Chromebook. (2) Press Esc++Power.   A yellow exclamation point (!) or "Please insert a recovery USB stick" is displayed. (1) Press Ctrl+D to begin Developer mode, then press Enter. (2) Press Space, then press Enter. The Chromebook deletes its local data, returning to its initial state. This can take approximately 40 minutes. Note: ​If Forced re-enrollment is enabled for the device, you'll see a note that Developer mode is blocked. This shortens the wipe process, and still allows for re-enrollment when the device automatically restarts in Verified mode. (1) When the transition completes, press the space bar, then press Enter to return to Verified mode. (2) Enroll the Chromebook before signing in to it.

(1) Turn off your mac. (2) Press the shift key on the left and the power button simultaneously to switch on your mac in “safe mode". (3) If it was a software error your cursor should work fine in safe mode. (4) If the issue doesn't persist when your Mac is started in safe mode, try restarting without pressing any keys. (4.1) If the issue comes back, you might have incompatible login items. (4.2) If the issue doesn't come back, it was probably caused by a cache or directory issue with your startup disk, which safe mode fixed. **