You need to trigger the media before Windows has a chance to start so that error doesn't come up and you're not prompted for a password. That's the whole point of using the bootable media, because it doesn't require a password you can't supply.
Then you can try to repair the error and the other repairs I gave you earlier. To try to repair the error choose Repair Your Computer on second screen after booting media, then Advanced Troubleshooting Options, then access the Command Prompt to run SFC and DISM as shown in this tutorial for the blue screen error:
https://www.makeuseof.com/tag/critical-process-died/
If you don't want to bother then use the media to Clean Install following the steps I gave earlier. If you have files that aren't backed up you can use the same bootable media to try to rescue your files using these methods: http://answers.microsoft.com/en-us/windows/wiki/windows\_10-update/rescue-files-when-windows-wont-start/862c143f-9239-4e63-8968-635e8ba9efd6