Dell Latitude E6520 fails to boot after Windows Updates

Question

Hello, 
I have a Dell Latitude E6520 that is not starting up after Windows updates. It installs updates and requests a reboot, after which it blue screens at the splash logo and reboots again. This goes on indefinitely. The only way to repair it is to boot from
a recovery disk and run: 
dism /image:D:\ /cleanup-image /revertpendingactions
This is after running dism /image:D:\ /get-packages and noticing that several updates are still in an "Install_Pending" state. These are the kb's that are pending: 
kb2982378
kb2978742
kb2977629
kb2976897
kb2973112
kb2972211
There were other updates, but those showed as installed. I would post the WindowsUpdate.Log, but I do not see a button to attach a file and the log is very long. Here is what I think is relevant towards the end of the log:
2014-09-18 10:52:04:214
496 540
AU Install complete for all calls, reboot  needed
2014-09-18 10:52:04:216
496 540
AU Successfully wrote event for AU health state:0
2014-09-18 10:52:04:623
496 8a4
AU UpdateDownloadProperties: 0 download(s) are still in progress.
2014-09-18 10:52:04:623
496 8a4
AU Triggering Offline detection (non-interactive)
2014-09-18 10:52:04:623
496 8a4
AU AU setting pending client directive to 'Reboot Pending'
2014-09-18 10:52:04:623
496 8a4
AU Changing existing AU client directive from 'Progress Ux' to 'Reboot Pending', session id = 0x1
2014-09-18 10:52:04:625
496 8a4
AU Successfully wrote event for AU health state:0
2014-09-18 10:52:04:625
496 1668
AU #############
2014-09-18 10:52:04:625
496 1668
AU ## START ##  AU: Search for updates
2014-09-18 10:52:04:625
496 1668
AU #########
2014-09-18 10:52:04:626
496 1668
AU <<## SUBMITTED ## AU: Search for updates [CallId = {7C1069F1-2D57-421E-A378-38DE401BF9F1}]
2014-09-18 10:52:04:626
496 166c
Agent *************
2014-09-18 10:52:04:626
496 166c
Agent ** START **  Agent: Finding updates [CallerId = AutomaticUpdates]
2014-09-18 10:52:04:626
496 166c
Agent *********
2014-09-18 10:52:04:626
496 166c
Agent  * Online = No; Ignore download priority = No
2014-09-18 10:52:04:626
496 166c
Agent  * Criteria = "IsInstalled=0 and DeploymentAction='Installation' or IsPresent=1 and DeploymentAction='Uninstallation' or IsInstalled=1 and DeploymentAction='Installation' and RebootRequired=1 or IsInstalled=0
and DeploymentAction='Uninstallation' and RebootRequired=1"
2014-09-18 10:52:04:626
496 166c
Agent  * ServiceID = {3DA21691-E39D-4DA6-8A4B-B43877BCB1B7} Managed
2014-09-18 10:52:04:626
496 166c
Agent  * Search Scope = {Machine}
2014-09-18 10:52:05:210
496 166c
Handler Using CBS interface ICbsSession7
2014-09-18 10:52:07:170
496 166c
Handler Using CBS interface ICbsSession7
2014-09-18 10:52:09:475
496 166c
Handler Using CBS interface ICbsSession7
2014-09-18 10:52:09:569
496 166c
Handler Using CBS interface ICbsSession7
2014-09-18 10:52:11:590
496 166c
Handler Using CBS interface ICbsSession7
2014-09-18 10:52:14:999
496 166c
Handler Using CBS interface ICbsSession7
2014-09-18 10:52:16:887
496 166c
Handler Using CBS interface ICbsSession7
2014-09-18 10:52:18:753
496 166c
Handler Using CBS interface ICbsSession7
2014-09-18 10:52:19:623
496 1668
Misc WARNING: IsSessionNonstandardUI: session 65536 is an unknown session type 0; treating it as a standard session
2014-09-18 10:52:20:673
496 166c
Handler Using CBS interface ICbsSession7
2014-09-18 10:52:22:573
496 166c
Handler Using CBS interface ICbsSession7
2014-09-18 10:52:22:773
496 166c
Handler Using CBS interface ICbsSession7
2014-09-18 10:52:24:464
496 166c
Handler Using CBS interface ICbsSession7
2014-09-18 10:52:24:651
496 1668
AU AU received handle event
2014-09-18 10:52:26:366
496 166c
Handler Using CBS interface ICbsSession7
2014-09-18 10:52:27:520
496 1668
Shutdwn user declined update at shutdown
2014-09-18 10:52:27:520
496 1668
AU Successfully wrote event for AU health state:0
2014-09-18 10:52:27:520
496 1668
AU AU initiates service shutdown
2014-09-18 10:52:27:520
496 1668
AU ###########  AU: Uninitializing Automatic Updates  ###########
2014-09-18 10:52:28:206
496 166c
Agent  * WARNING: Exit code = 0x8024000B
2014-09-18 10:52:28:206
496 166c
Agent *********
2014-09-18 10:52:28:206
496 166c
Agent **  END  **  Agent: Finding updates [CallerId = AutomaticUpdates]
2014-09-18 10:52:28:206
496 166c
Agent *************
2014-09-18 10:52:28:206
496 166c
Agent WARNING: WU client failed Searching for update with error 0x8024000b
2014-09-18 10:52:28:253
496 1668
Report REPORT EVENT: {62FF14E3-DDBE-4DDC-BE90-12B98EC74605}
2014-09-18 10:52:04:216-0600 1
193 102
{00000000-0000-0000-0000-000000000000}
0 0 AutomaticUpdates
Success Content Install
Restart Required: To complete the installation of the following updates, the computer must be restarted. Until this computer has been restarted, Windows cannot search for or download new updates:  - Security Update for Windows 7 for x64-based Systems
(KB2982378) - Security Update for Microsoft .NET Framework 3.5.1 on Windows 7 and Windows Server 2008 R2 SP1 for x64-based Systems (KB2973112) - Security Update for Windows 7 for x64-based Systems (KB2976897) - Security Update for Windows 7 for x64-based Systems
(KB2918614) - Cumulative Security Update for Internet Explorer 9 for Windows 7 for x64-based Systems (KB2977629) - Security Update for Microsoft .NET Framework 3.5.1 on Windows 7 and Windows Server 2008 R2 SP1 for x64-based Systems (KB2972211) - Security Update
for Microsoft .NET Framework 3.5.1 on Windows 7 and Windows Server 2008 R2 SP1 for x64-based Systems (KB2937610) - Security Update for Microsoft .NET Framework 3.5.1 on Windows 7 and Windows Server 2008 R2 SP1 for x64-based Systems (KB2894844) - Security Update
for Windows 7 for x64-based Systems (KB2978742)
2014-09-18 10:52:28:253
496 1668
Report CWERReporter finishing event handling. (00000000)
2014-09-18 10:52:28:253
496 1668
Report CWERReporter finishing event handling. (00000000)
2014-09-18 10:52:28:425
496 1668
Service *********
2014-09-18 10:52:28:425
496 1668
Service **  END  **  Service: Service exit [Exit code = 0x240001]
2014-09-18 10:52:28:425
496 1668
Service *************
Please let me know if there is a better way of attaching the log to this post and thank you in advance for any help.

Answer 1

Hi ChristianBoman,
We could use the OneDrive to upload the log and then paste the shared link here. For more information, please refer to the following article.
http://windows.microsoft.com/en-us/onedrive/share-file-folder
for the update error 0x8024000b,  please refer to the following article.
http://windows.microsoft.com/en-us/windows/windows-update-error-8024000b#1TC=windows-7
Please take the following steps:
1. Run the Windows Update Troubleshooter.
2. Click the Start button , type Run in the search box, and then, in the results list, click Run.
3. Copy the following text, and then paste it into the Run text box:
Cmd /c ren %systemroot%\System32\Spupdsvc.exe Spupdsvc.old
4. Click OK.
Best regards,
Fangzhou CHEN
Fangzhou CHEN
TechNet Community Support