Co-Workers laptop BSOD 0x7B

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  1. Posts : 32
    Win 7 Pro
       #1

    Win7 Ult BSOD 0x7B CLASSPNP.SYS


    Hello! My co-worker brought me her [personal] laptop because "it keeps crashing". When I received it I attempted to boot it up, and it went straight to the Startup Repair, I let that run, completely unsuccessful, as always, and it would not let me perform a System Restore to an earlier point. There was no System Image that could be reloaded, and when I ran the Windows Memory Test it completed with no errors. It will not boot into Safe Mode, it hangs on CLASSPNP.SYS. I found this thread when I attempted to run the sfc /scannow command I kept receiving the following:

    Beginning system scan. This process will take some time.

    There is a system repair pending which requires reboot to complete. Restart Windows and run sfc again.

    Reading the BSOD-Posting Instructions the C:\Windows\Minidump directory is empty, and because I can't boot this thing I cannot run the SF Diagnostic Tool, I tried to run it from the recovery Console via command prompt, but no luck.

    I have the disc, but cannot boot to repair the OS install, and cannot install because she upgraded to Windows 7 Ultimate from Vista and has no clue where the key is.

    Windows 7 Ultimate x32
    Toshiba Satellite L305-S5921

    I'm a little stuck now, and help from the community would be awesome, this is about as far as my "expertise" goes, just don't tell my boss lol.
      My Computer

  2.    #2

    Stop 0x7B is the Stop Code for the Inaccessible_Boot_Device bugcheck, since your not able to boot into Windows, have listed the common causes for the issue:

    Code:
    Usual causes:  Hard drive, File system, Boot sequence errors, Device driver, Virus infection (in particular check the MBR)
    Windows has lost access to the boot partition during the boot process, let's create some steps for you to carry out:

    Scan for any malware:

    Run some hard-drive diagnostics and follow these steps:

    Find your hard-drive manufacturer and run their tests.

    Additional Tests:

    Post a screenshot of Crystal Disk Info summary:

    writhziden said:
    If you have an SSD, make sure the following are up to date:
    • SSD firmware
    • BIOS Version
    • Chipset Drivers
    • Hard disk controller drivers/SATA drivers
    • If you have a Marvell IDE ATA/ATAPI device, make sure the drivers are up to date from the Intel site or Marvell site and not from your motherboard/vendor support site.
    Check for any file system errors and bad sectors using Option #2 of:

    Use this command with Disk Check:

    Code:
    chkdsk C: /f /r
      My Computer


  3. Posts : 32
    Win 7 Pro
    Thread Starter
       #3

    I have removed the hard drive and plugged it up to another machine via USB adapter bridge, Ran Symantec's & Malwarebytes, both clean, ran chkdsk, all is well, ran Western Digital Data LifeGuard Diagnostics and it passed all test. Still crashing as before.
      My Computer


  4. Posts : 6,830
    Windows 7 Ultimate 32-Bit & Windows 7 Ultimate 64-Bit
       #4

    Do you have a USB Flash Drive ?

       Warning
    You will need a USB FLASH DRIVE


       Tip
    Download the Tool from a non infected PC


    Download Farbar Recovery Scan Tool

    32-bit Version OS Farbar Recovery Scan Tool

    Plug the flash drive into the infected PC.

    Enter System Recovery Options.

    To enter System Recovery Options from the Advanced Boot Options:
    Restart the computer.
    As soon as the BIOS is loaded begin tapping the F8 key until Advanced Boot Options appears.
    Use the arrow keys to select the Repair your computer menu item.
    Select US as the keyboard language settings, and then click Next.
    Select the operating system you want to repair, and then click Next.
    Select your user account an click Next.

    To enter System Recovery Options by using Windows installation disc:
    Insert the installation disc.
    Restart your computer.
    If prompted, press any key to start Windows from the installation disc. If your computer is not configured to start from a CD or DVD, check your BIOS settings.
    Click Repair your computer.
    Select US as the keyboard language settings, and then click Next.
    Select the operating system you want to repair, and then click Next.
    Select your user account and click Next.

    On the System Recovery Options menu you will get the following options:
    Startup Repair

    System Restore

    Windows Complete PC Restore

    Windows Memory Diagnostic Tool

    Command Prompt

    Select Command Prompt

    In the command window type X:\FRST.exe and press Enter
       Note
    Replace letter X with the drive letter of your flash drive.

       Tip
    Type the commands below to see what your letter is for the USB drive and press ENTER after each command

    Code:
    Diskpart
    List volume
    The tool will start to run.
    When the tool opens click Yes to disclaimer.
    Press Scan button.
    FRST will let you know when the scan is complete and has written the FRST.txt to file
    Please copy and paste both logs in your reply.(FRST.txt and Addition.txt)
      My Computer


  5. Posts : 10,796
    Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
       #5

    Boot to win7 recovery environment. So boot and press F8, advanced boot oprion->repair your computer. Now enter "command prompt"

    dir C:\
    dir D:\
    dir E:\

    What is drive letter of win7 partition (can differ from normal driver letters!)? Assume it's H.
    Code:
    sfc  /scannow  /offbootdir=H:\  /offwindir=H:\windows
    What happens?
      My Computer


  6. Posts : 10,796
    Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
       #6

    startup repair: After it completes click "view diagnostic and repair results"
    Status 0x0 means no error. What test has errors? What error?

      My Computer


  7. Posts : 32
    Win 7 Pro
    Thread Starter
       #7

    VistaKing said:
    FRST will let you know when the scan is complete and has written the FRST.txt to file
    Please copy and paste both logs in your reply.(FRST.txt and Addition.txt)
    I ran the tool twice, first time as you specififed and the second checking the Addition.txt box, neither resulted in an Addition.txt, but I have attached the FRST.txt, as requested.

    --------------------------------------------------------------------------------------------------------
    Kaktussoft said:
    Boot to win7 recovery environment. So boot and press F8, advanced boot oprion->repair your computer. Now enter "command prompt"
    Code:
    sfc  /scannow  /offbootdir=H:\  /offwindir=H:\windows
    What happens?
    Beginning system scan. This process will take some time.

    Windows Resource Protection did not find any integrity ciolations.

    --------------------------------------------------------------------------------------------------------
    Kaktussoft said:
    startup repair: After it completes click "view diagnostic and repair results"
    Status 0x0 means no error. What test has errors? What error?
    Root cause found:
    ----------------------
    Unknown Bugcheck: Bugcheck 8e. Parameters = 0xc000005, 0x83606487, 0xaa14f704, 0x0

    Reparir action: System files integrity check and repair
    Result: Failed. Error code = 0x490
    Time taken = 782938 ms
      My Computer


  8. Posts : 10,796
    Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
       #8

    In recovery environment ->command prompt

    Code:
     
    dism/image:c:\  /get-Drivers
    Look for drivers with classname: hdc or SCSI. What is original name, published name and Provider name?
      My Computer


  9. Posts : 10,796
    Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
       #9

    Loope said:
    Root cause found:
    ----------------------
    Unknown Bugcheck: Bugcheck 8e. Parameters = 0xc000005, 0x83606487, 0xaa14f704, 0x0

    Reparir action: System files integrity check and repair
    Result: Failed. Error code = 0x490
    Time taken = 782938 ms
    I thought you told us the stopcode was 0x7B (normal boot)?
    Last edited by Kaktussoft; 05 Jun 2013 at 10:03.
      My Computer


  10. Posts : 32
    Win 7 Pro
    Thread Starter
       #10

    Kaktussoft said:
    In recovery environment ->command prompt

    Code:
     
    dism/image:c:\  /get-Drivers
    Look for drivers with classname: hdc or SCSI. What is original name, published name and Provider name?
    Published Name : oem12.inf
    Orginal File Name : nvstor.inf
    Inbox : No
    Class Name : HDC
    Provider Name : NVIDIA Corporation
    Date : 12/23/2006
    Version : 5.10.2600.824

    Published Name : oem17.inf
    Orginal File Name : ich9ahci.inf
    Inbox : No
    Class Name : hdc
    Provider Name : Intel
    Date : 2/20/2008
    Version : 6.9.1.1001

    Published Name : oem3.inf
    Orginal File Name : nvraid.inf
    Inbox : No
    Class Name : SCSIAdapter
    Provider Name : NVIDIA Corporation
    Date : 12/23/2006
    Version : 5.10.2600.824

    --------------------------------------------------------------------------------------------------------
    Kaktussoft said:
    I thought you told us the stopcode was 0x7B (normal boot)?
    The 0x7B is the Stop Code I receive and still do with the BSOD.
      My Computer


 
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