Windows 10 Preparing Automatic Repair, Fails, boots on second try.

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  1. Posts : 6
    Windows 10 Pro
       #1

    Windows 10 Preparing Automatic Repair, Fails, boots on second try.


    This is a Dell Precision M7510. Has a Samsung 950 NVME 512GB SSD in the M.2 slot as the main OS drive. A secondary 512GB SSD is installed in the SATA slot as a DATA drive. This system has Windows 10 Pro on it, installed from an imaging software at our work. Countless other systems have this same WIndows 10 image without issue. Two other 7510s have the same setup (M.2 boot drive) without issue.

    I power on this system and after about 10 seconds I get the "preparing automatic repair". Then Diagnosing PC, Attempting repairs, then "Couldn't repair" Shutdown or Advanced Options. If I shut the computer down, turn it immediately back on it boots just fine. Here is a copy of the srttrail.txt file.. Any ideas?

    Startup Repair diagnosis and repair log---------------------------Number of repair attempts: 1Session details---------------------------System Disk = \Device\Harddisk0Windows directory = C:\WINDOWSAutoChk Run = 0Number of root causes = 1Test Performed: ---------------------------Name: Check for updatesResult: Completed successfully. Error code = 0x0Time taken = 0 msTest Performed: ---------------------------Name: System disk testResult: Completed successfully. Error code = 0x0Time taken = 0 msTest Performed: ---------------------------Name: Disk failure diagnosisResult: Completed successfully. Error code = 0x0Time taken = 0 msTest Performed: ---------------------------Name: Disk metadata testResult: Completed successfully. Error code = 0x0Time taken = 0 msTest Performed: ---------------------------Name: Target OS testResult: Completed successfully. Error code = 0x0Time taken = 62 msTest Performed: ---------------------------Name: Volume content checkResult: Completed successfully. Error code = 0x0Time taken = 63 msTest Performed: ---------------------------Name: Boot manager diagnosisResult: Completed successfully. Error code = 0x0Time taken = 0 msTest Performed: ---------------------------Name: System boot log diagnosisResult: Completed successfully. Error code = 0x0Time taken = 0 msRoot cause found: ---------------------------Boot manager failed to find OS loader.Repair action: File repairResult: Failed. Error code = 0x490Time taken = 2485 msRepair action: Boot configuration data store repairResult: Failed. Error code = 0x490Time taken = 47 ms------------------------------------------------------
      My Computer


  2. Posts : 42,734
    Win 10 Pro (22H2) (2nd PC is 22H2)
       #2

    Hi, suggest you check your disk.

    Then consider

    Fix the MBR – Guide for Windows XP, Vista, 7, 8, 8.1, 10
    section
    Fix the MBR in Windows 10
      My Computers


  3. Posts : 6
    Windows 10 Pro
    Thread Starter
       #3

    Chkdsk is fine:

    Chkdsk was executed in scan mode on a volume snapshot. Checking file system on C:Volume label is Local Disk.Stage 1: Examining basic file system structure ... 506112 file records processed. File verification completed. 10099 large file records processed. 0 bad file records processed. Stage 2: Examining file name linkage ... 625818 index entries processed. Index verification completed. Stage 3: Examining security descriptors ...Security descriptor verification completed. 59854 data files processed. CHKDSK is verifying Usn Journal... 40344912 USN bytes processed. Usn Journal verification completed.Windows has scanned the file system and found no problems.No further action is required. 499362815 KB total disk space. 338822016 KB in 387187 files. 214064 KB in 59855 indexes. 636395 KB in use by the system. 65536 KB occupied by the log file. 159690340 KB available on disk. 4096 bytes in each allocation unit. 124840703 total allocation units on disk. 39922585 allocation units available on disk.

    I will attempt MBR check/repair
      My Computer


  4. Posts : 42,734
    Win 10 Pro (22H2) (2nd PC is 22H2)
       #4

    Yes, but chkdsk won't check the area you need to check. Try Crystal Diskinfo and Macrorit DiskScanner
      My Computers


  5. Posts : 6
    Windows 10 Pro
    Thread Starter
       #5

    CDI report happy:




    Although my backup drive seems to be failing (I)
      My Computer


  6. Posts : 42,734
    Win 10 Pro (22H2) (2nd PC is 22H2)
       #6

    Good to know that! Try Startup repair with a Win 10 disk, then if that doesn't work, the MBR repair.

    A Macrium Reflect boot disk also offers a repair sequence - you can try that.
    v5: How to fix Windows boot problems (Restore, Windows PE)

    If that fails there's at least one more possible step.
      My Computers


  7. Posts : 6
    Windows 10 Pro
    Thread Starter
       #7

    dalchina said:
    Good to know that! Try Startup repair with a Win 10 disk, then if that doesn't work, the MBR repair.

    A Macrium Reflect boot disk also offers a repair sequence - you can try that.
    v5: How to fix Windows boot problems (Restore, Windows PE)

    If that fails there's at least one more possible step.
    Will do. I actually have the pro version of Macrium

    Other disk checker said all clear:


      My Computer


  8. Posts : 6
    Windows 10 Pro
    Thread Starter
       #8

    I ran the repair from Macrium. Went from original error to "We need to check your disk". I did some more reading of the error logs and discovered that it wasn't cleanly shutting down. Some more reading, and I turned off the Windows 10 Fast Startup. Haven't had a startup issue since. I noticed the NVME driver for my Samsung SSD was 1.4.7.17, and there's a newer version (2.1.0.1611). Installed it tonight and may turn the windows 10 fast startup back on to see if the issue returns..
      My Computer


  9. Posts : 6
    Windows 10 Pro
    Thread Starter
       #9

    Just to update problem has not re-occurred.
      My Computer


  10. Posts : 42,734
    Win 10 Pro (22H2) (2nd PC is 22H2)
       #10

    Fast startup has had some adverse consequences for some users, mostly related to drivers. You have a SSD so don't need it anyway...

    Glad you've found a solution.
      My Computers


 

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