Maybe Samsung Suypport can help you with your problem.
http://www.samsung.com/us/support/owners/product/XE500T1C-A01US
See if you have a file in C:\ProgramData\Samsung called "Disable_Windowsupdate.exe". If so, rename or delete it.
It may be necessary to uncheck "Hide known file types" in Control Panel/ Folder Options/ View, to see file extensions. It may also be necessary to show both Hidden, and System Files.
See if there is any Scheduled Task running, or set to run, that might be launching the "Disable_Windowsupdate.exe". It might be necessary to disable or delete any such Task?
I am looking at these following lines in your inst.ini file but in all honesty they don't mean much to me. It is just an impression that they give me suggesting the "Disable_Windowsupdate.exe" might be running at Startup or Login.
[64Win8]
Setup1=xcopy 64\Disable_Windowsupdate.exe "%ALLUSERSPROFILE%\Samsung" /y
Setup2=schtasks /create /XML "%CD%\Dis_AU.xml" /tn "Dis_AU"
You could also look to Clean Boot starts on your machine to see if you can do Windows Updates.
How to perform a clean boot in Windows
http://support.microsoft.com/kb/929135/en-au
How to perform a clean boot to troubleshoot a problem in Windows Vista, Windows 7, or Windows 8
http://support.microsoft.com/default.aspx/kb/929135
If you are having a problem with Windows Updates you could try the Fixit Tool from this article?
How do I reset Windows Update components?
http://support.microsoft.com/kb/971058
Most new machines come with a recovery partition allowing you to go back to the time of purchase, you will have to check your user guides (or the manufacturer's Web Site) for instructions. Choosing that path requires you to save all valuable data first. Unfortunately upgrading to Windows 8.1 may lose such Recovery Partition.
These options are built-in to Windows 8 also.
How to restore, refresh, or reset your PC
http://windows.microsoft.com/en-US/windows-8/restore-refresh-reset-pc
Windows 8.1 Update Leaves OEM Owners With Broken Restore Function
Warning! If You Upgrade to Windows 8.1 Through Windows Store, You May Loose The Ability to Refresh and Reset
Update to Windows 8.1: FAQ
http://windows.microsoft.com/en-in/windows-8/upgrade-to-windows-8