Feature update to Windows 10, version 1703 failed to install

Hello people,
I m using windows 10 pro and i m unable to install windows 10 creator update version 1703 since its release daily its start downloading itself and at the end it says update failed to install i lost too much data i m fearing about cost now.
One thing i remember is power failure while downloading update.mostly i don't take cares about update its works in background but i was feeling too slow browsing etc.I m attaching images bellow.

Greetings,I have a dial boot system with both boot disks running Win 10 Pro. Boot options are:

$0$Sys$Win10
$1$Sys$Win10
I use the "$n$" prefix to designate the physical disk on my system. (It's a hold over from OpenVMS' Allocation Class ) Each partition/volume also has the allocation class as the volume label, example: $1$Disk$Data is a data partition on physical disk 1.
After the initial installation pass and the subsequent reboot request, two new boot options are inserted into my boot record:
Windows 10
Windows_Setup
$0$Sys$Win10
$1$Sys$Win10
$0$Sys$Win10 is my primary boot device and is also the default boot device with a 30 second timeout to change my boot device if I so choose. The timeout has been removed with this reboot phase - not a problem however, I cannot get the update to proceed to completion.
I've selected $0$Sys$Win10 over 10 times and all that happens is the system says Restarting and returns to the boot prompts. Same if I select Windows 10. When I select Windows_Setup the boot process continues with "Restoring Previous Version of Windows". Which does give me my previous Windows installation without any problems.