Windows 10 Boot Camp Error code 0xc0000001

I have had a successful windows partition on my Mid 2012 MacBook Pro for the last 3years. My machine last power while updating Windows (unsure which version) and I now receive the following message when trying to boot into windows: I really don't want to have to reinstall windows as I have no idea where my serial number is (it is a legitimate version though).

Note: my Mac os is working perfectly fine and I have tried to start up windows with debugging which hasn't made a difference.

2.9 GHz Intel Core i7, 16 GB 1600 MHz DDR3, Intel HD Graphics 4000 1536 MB

Thanks in advance!

"Recovery

You PC couldn't start properly

After multiple tries, the operating system on your PC failed to start, so it needs to be repaired.

Error code: 0xc0000001

You'll need to use recovery tools. If you don't have any installation media (like a disc or USB device), contact your PC administrator or PC/Device manufacturer.

Press Enter to try again

Press F8 for Startup Settings"

Help?