Laptop is just stuck in an infinite loop between diagnosing your PC and Preparing Automatic Repair. Sometimes it comes up with repairing disk errors, but never stays and just enters the loop again.
I've read numerous other threads online and yet to find something that works. Starting to think there is nothing I can personally do.
Solution 1. Perform a hard reboot
If your Windows cannot boot because of the "Preparing Automatic Repair" or "Diagnosing your PC" error, you can do a hard reboot.
Remove the battery and AC adapter.
Press and hold the power button for 20 seconds and see if it will boot up normally.