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Windows 7 rebooting after login

Posted on 2011-09-24
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Last Modified: 2012-05-12
Having issues with several machines we just running Windows 7.    Our users enter the login/pw, it starts to load W7, but then logs off.   I had the user log into Safe Mode OK, but when they try it under a normal login, it goes back to the reboot loop.   Any suggestions?
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Question by:DBI-DT
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12 Comments
 
LVL 98

Expert Comment

by:John Hurst
ID: 36592832
Boot into Safe mode and see if a temporary profile has been created. This happens sometimes with Windows 7. Use Profile Management (Computer, Properties, Advanced) to delete any temporary profiles.

Also make sure Windows 7 is properly activated. This symptom above will occur if not activated.

... Thinkpads_User
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LVL 27

Expert Comment

by:davorin
ID: 36592833
Take a look in event viewer for some errors or warnings logged.
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LVL 98

Expert Comment

by:John Hurst
ID: 36592836
I also should have noted:  See if you can run System File Checker (SFC /SCANNOW) from a command prompt in Safe Mode.  ... Thinkpads_User
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Author Comment

by:DBI-DT
ID: 36592885
I've had them run the SFC with out any luck.  The Event IDs that are common to users are 1084 ShellHWDetection.
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LVL 98

Expert Comment

by:John Hurst
ID: 36592901
Check one of the machines thoroughly for malware (try malwarebytes). Windows 7 is quite reliable and this is not normal. Did you check Activation? ... Thinkpads_User
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Author Comment

by:DBI-DT
ID: 36594350
Machine is activated.  No temporary profiles.
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LVL 66

Expert Comment

by:johnb6767
ID: 36594354
Traditionally, the immediate logoff is a bad Userinit value here....

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

It shouold be set to "C:\Windows\system32\userinit.exe,"

But Safe Mode wouldnt work.....

Since Safe Mode works ok, then I would start here.....

Perform a clean startup to determine whether background programs are interfering with your game or program
http://support.microsoft.com/kb/331796

Start with the Satrtup Tab, and then the NON MS Services....
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LVL 27

Expert Comment

by:davorin
ID: 36594926
Do all the machines have something in common - like nvidia graphic card?
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LVL 98

Expert Comment

by:John Hurst
ID: 36595005
When nothing is wrong, it is time to take one of the machines and reinstall Windows 7. If the machines are name brand, use the Recovery Partition and bring back to factory setup. If you built the machines yourself, check BIOS, Chipset, Video, Audio and NIC drivers for the latest version and make sure you have those on hand.  

Rebuild one and see if you get the same thing. .... Thinkpds_User
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LVL 3

Expert Comment

by:Dexter Naag
ID: 36595321
sound more like a hardware problem to me..please check if you are using an onboard graphics card, you may have to set it to minimum windows 7 requirement. (at least 64MB) and check how big your RAM installed..
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Accepted Solution

by:
DBI-DT earned 0 total points
ID: 36931868
We discovered that our GPO was turning on the Application Identity service (Applocker).  Once we disabled it, the machine would log in.  There was a conflict somewhere.
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Author Closing Comment

by:DBI-DT
ID: 37052374
Closed by user.
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