Windows fails to start up sometimes, error 6b

Alright in the recovery environment, your system reserved partition is seen as the C: drive, and your C: drive is seen as the D: drive. %SystemRoot%\system32\codeintegrity becomes D:\Windows\system32\codeintegrity



Also, given the problems you are having, you should check for corrupted files.

• Run Disk Check with both boxes checked for all HDDs and with Automatically fix file system errors checked for all SSDs. Post back your logs for the checks after finding them using Check Disk (chkdsk) - Read Event Viewer Log
  
  
  
• Run SFC /SCANNOW Command - System File Checker up to three times to fix all errors. Post back if it continues to show errors after a fourth run or if the first run comes back with no integrity violations.

Additionally, please follow the https://www.sevenforums.com/crashes-d...tructions.html to provide us with more information about your system and possible driver conflicts, event viewer logs, and system hardware/software to give us more information so we may provide better troubleshooting steps.