Why does my Windows 10 TP 10049 fail to boot, recovery menu options all fail?

[Pawn88]

Windows 10 TP 10049 Fails to boot recovery menu options all fail

I have Win 10 TP Build 10049 installed on an ASUS X205-TA notebook.
After updating to 10049 started having many blue frowny screens/System lock ups

So I tried booting to the recovery menu and trying to do one of the system repairs ( which failed). Now Windows always fails to boot and only goes to the recovery menu.
(Roll back fails, Tried 'Refresh installation' also fails)

Is there a way to re-install a previous build or install 10061 over the current version?
Will this result in local data being deleted?

 

[Pawn88]

Also I do have Bitlocker enabled. I have the recovery key and have used it successfully to export the files from the drive through the recovery Command Prompt.