Windows update crashes with a blue screen to restart

Question

windows updates were in the process of download , and the internet crashed before i finish the updates , and when the internet came back , instead of continuing to download the rest of the update , it said install as it's fully downloaded 
and whenever i press install it gets blue screen with a thread_pointer exception i guess 
so , why there is no option to redownload the update from the beginning ??
i tried to restore the pc before any updates but it crashed on the same point so i don't know why and how to fix this
update name :windows 8.1 update for x64 based Systems (kb2919355) 890.2 mb
my operating system is windows 8.1
my lap is toshiba core i5 ram 4
model : satellite c660-1me
i searched alot but i couldn't fix it
thanks

Answer 1

In order to assist you, we will need the .DMP files to analyze what exactly occurred at the time of the crash, etc. 
If you don't know where .DMP files are located, here's how to get to them:
1. Navigate to the
%systemroot%\Minidump folder.
2. Copy any and
all DMP files in the Minidump folder to your Desktop and then zip up these files.
3. Upload the zip
containing the .DMP files to Onedrive or a hosting site of your choice and paste in your reply. Prefered sites: Onedrive, Mediafire, Dropbox, etc. Nothing with wait-timers.
4 (optional): The
type of .DMP files located in the Minidump folder are known as Small Memory Dumps. In %systemroot% there will be what is known as a Kernel-Dump (if your system is set to generate). It is labeled MEMORY.DMP. The difference between Small Memory Dumps and Kernel-Dumps
in the simplest definition is a Kernel-Dump contains much more
information at the time of the crash, therefore allowing further debugging of your issue. If your upload speed permits it, and you aren't going against any strict bandwidth and/or usage caps, etc, the Kernel-Dump is the best choice. Do note that Kernel-Dumps
are much larger in size due to containing
much more info, which is why I mentioned upload speed, etc.
If you are going to use Onedrive but don't know how to upload to it, please visit the following:
Upload photos and files to Onedrive.
Please note that any "cleaner" programs such as TuneUp Utilities, CCleaner, etc, by default will delete .DMP files upon
use.
If your computer is not generating .DMP files, please do the following:
1. Start > type
%systemroot% which should show the Windows folder, click on it. Once inside that folder, ensure there is a Minidump folder created. If not, CTRL-SHIFT-N to make a New Folder and name it Minidump.
2. Windows key +
Pause key. This should bring up System. Click Advanced System Settings on the left > Advanced > Performance > Settings > Advanced > Ensure there's a check-mark for 'Automatically manage paging file size for all drives'.
3. Windows key +
Pause key. This should bring up System. Click Advanced System Settings on the left > Advanced > Startup and Recovery > Settings > System Failure > ensure there is a check mark next to 'Write an event to the system log'. 
Ensure Small Memory Dump is selected and ensure the path is %systemroot%\Minidump.
4. Double check
that the WERS is ENABLED:
Start > Search > type services.msc > Under the name tab, find Windows Error Reporting Service > If the status of the service is not Started then right click it
and select Start. Also ensure that under Startup Type it is set to Automatic rather than Manual. You can do this by right clicking it, selecting properties, and under General selecting startup type to 'Automatic', and then click Apply. 
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