Win7 Logs In, Then Out Suddenly

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  1. Posts : 260
    Windows 7 Ultimate x64
       #1

    Win7 Logs In, Then Out Suddenly


    Hi Everyone! I've offered to help a family member with a rather peculiar issue with their PC. Let me outline it as simply as I can:

    Their PC OS: Win7 Ultimate 32bit

    There's 4 users: Dad, Mum, Kid 1, Kid 2 - Dad and Mum have 'admin' accounts, kids have 'standard' accounts

    On the welcome screen if you click on any of: Dad, Kid 1 or Kid 2's user accounts, windows logs in the logs out straight away going back to the welcome screen. However if you enter the 'Mum' account a black screen is displayed and an error message shows relating to a dll file (can't remember the exact name - will update this later).

    Now if I restart the PC into Safe Mode, I still cannot log into the other 3 accounts but this time I am able to successfully enter the 'Mum' account.

    I've searched around and so far i've done the following:

    1. Run a Malwarebytes Scan (Deleted a few pieces of malware it found)
    2. Gone into regedit and looked under HKLM/Software/.../Winlogon and checked Shell & Userinit values.

    What else can I do? Any help is appreciated!
      My Computer


  2. Posts : 21,482
    Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
       #2

    Check Device Manager for problems.
      My Computer


  3. Posts : 5,656
    Windows 7 Ultimate x64 SP1
       #3

    Hey Mist,
    Try:
    - sfc scan SFC /SCANNOW Command - System File Checker
    - clean startup - Troubleshoot Application Conflicts by Performing a Clean Startup
    - System Restore - System Restore
    - check HDD health with manufacturer's tools

    If everything fails - consider repair install - Repair Install
      My Computer


  4. Posts : 260
    Windows 7 Ultimate x64
    Thread Starter
       #4

    NoelDP said:
    Check Device Manager for problems.
    Device manager's all clear Noel! No issues at all.

    GokAy said:
    Hey Mist,
    Try:
    - sfc scan SFC /SCANNOW Command - System File Checker
    - clean startup - Troubleshoot Application Conflicts by Performing a Clean Startup
    - System Restore - System Restore
    - check HDD health with manufacturer's tools

    If everything fails - consider repair install - Repair Install
    1. Tried SFC but it keeps saying it found problems but couldn't fix them.
    2. Already Done a clean start-up - I couldn't log into the 'Mum' account before (even in safe mode) but after a clean restart I managed to access it in safe mode.
    3. No restore points unfortunately!
    4. Hard Drive health is fine, I used the manufacturers tools to run diagnostics.

    ---

    I am now going through the Event Viewer as this tends to be good for picking out issues.

    It keeps showing a DCOM error '1084' for various services such as 'TermService'

    I also notice that between the Log-On and Log-Off events there are 3 McAfee events that occur. Could the problem be with the AV software?
      My Computer


  5. Posts : 5,656
    Windows 7 Ultimate x64 SP1
       #5

    Can be: try uninstalling McAfee.
    You can get errors/warnings for services when started in Safe Mode (due to them not being able to start).

    in cmd:
    Code:
    findstr /c:"[SR]" %windir%\logs\cbs\cbs.log >"%userprofile%\desktop\sfcdetails.txt"
    Attach the sfcdetails.txt please
      My Computer


  6. Posts : 5,656
    Windows 7 Ultimate x64 SP1
       #6

    By the way:

    How did you configure a clean startup when it was not possible to login? msconfig work outside of Windows? I couldn't get it to work from PE. Really wish to learn about this :)
      My Computer


  7. Posts : 260
    Windows 7 Ultimate x64
    Thread Starter
       #7

    GokAy said:
    By the way:

    How did you configure a clean startup when it was not possible to login? msconfig work outside of Windows? I couldn't get it to work from PE. Really wish to learn about this :)
    My bad! I put it under the wrong number!

    I meant after the first time I ran SFC, then I could access the 'Mum' account in Safe Mode: so AFTER this I did the Clean Start-Up.

    Sorry, my bad!
      My Computer


  8. Posts : 260
    Windows 7 Ultimate x64
    Thread Starter
       #8

    GokAy said:
    Can be: try uninstalling McAfee.
    You can get errors/warnings for services when started in Safe Mode (due to them not being able to start).

    in cmd:
    Code:
    findstr /c:"[SR]" %windir%\logs\cbs\cbs.log >"%userprofile%\desktop\sfcdetails.txt"
    Attach the sfcdetails.txt please
    Attached the CBS Log.

    Please note I've just ran a new SFC to get a fresh log.
      My Computer


  9. Posts : 5,656
    Windows 7 Ultimate x64 SP1
       #9

    Nothing wrong with sfc, usual corruption which is actually not a corruption :)

    Did you try uninstalling McAfee yet?
      My Computer


  10. Posts : 21,482
    Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
       #10

    There are actually a few problems in the CBS.log
    Code:
    Line 37: 2015-09-09 18:18:09, Error                 CBS    Failed to parse package manifest: \\?\C:\Windows\Servicing\Packages\Package_2_for_KB2846071~31bf3856ad364e35~x86~~9.4.1.0.mum [HRESULT = 0x80070002 - ERROR_FILE_NOT_FOUND]
    	Line 38: 2015-09-09 18:18:09, Error                 CBS    Failed to resolve package 'Package_2_for_KB2846071~31bf3856ad364e35~x86~~9.4.1.0' [HRESULT = 0x80070490 - ERROR_NOT_FOUND]
    	Line 49: 2015-09-09 18:18:09, Error                 CBS    Failed to internally open package. [HRESULT = 0x80070490 - ERROR_NOT_FOUND]
    Se
    Please download and save the CheckSUR tool from http://support.microsoft.com/kb/947821
    (you'll need to look in the details for Windows 7, downloading from the Microsoft Download Center)

    Run it - The tool can take anywhere from 5 mins to a couple of hours to run (or 'Install') depending on how much it has to do, and may exit silently - it may appear to freeze for most of that time, but be patient.
    The result is logged in the C:\Windows\Logs\CBS\CheckSUR.log file - and an archive …\checksur.persist.log file

    Then zip the CheckSUR.log and upload it to your reply.
      My Computer


 
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