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Windows 7: Win7 Logs In, Then Out Suddenly

09 Sep 2015   #1
MistUnleashed

Windows 7 Ultimate x64
 
 
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 System SpecsSystem Spec
.
09 Sep 2015   #2
NoelDP

Microsoft Community Contributor Award Recipient

Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
 
 

Check Device Manager for problems.
My System SpecsSystem Spec
09 Sep 2015   #3
GokAy

Windows 7 Ultimate x64 SP1
 
 

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 System SpecsSystem Spec
.

09 Sep 2015   #4
MistUnleashed

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by NoelDP View Post
Check Device Manager for problems.
Device manager's all clear Noel! No issues at all.

Quote   Quote: Originally Posted by GokAy View Post
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 System SpecsSystem Spec
09 Sep 2015   #5
GokAy

Windows 7 Ultimate x64 SP1
 
 

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 System SpecsSystem Spec
09 Sep 2015   #6
GokAy

Windows 7 Ultimate x64 SP1
 
 

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 System SpecsSystem Spec
09 Sep 2015   #7
MistUnleashed

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by GokAy View Post
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 System SpecsSystem Spec
09 Sep 2015   #8
MistUnleashed

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by GokAy View Post
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 System SpecsSystem Spec
09 Sep 2015   #9
GokAy

Windows 7 Ultimate x64 SP1
 
 

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

Did you try uninstalling McAfee yet?
My System SpecsSystem Spec
10 Sep 2015   #10
NoelDP

Microsoft Community Contributor Award Recipient

Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
 
 

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 System SpecsSystem Spec
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