Satellite C55-A-1N1 - How to repair Windows 8.1 after trying Linux?

Hi,
Laptop: Satellite C55-A-1N1
In my infinite wisdom I tried to install Linux in a dual boot scenario like my old laptop. I shrunk the main windows partition in windows 8.1 first and then installed linux to that partition. After rebooting, Linux worked but not windows since I had to disable secure boot and set bios to CSM for linux to load.
After putting secure boot back to on and bios to EFI, windows no longer boots. I tried to repair the windows operating system by running the repair tools from another Win8.1 DVD but they didn't repair the booting. I subsequently learned that holding zero at boot brings you to the hidden recovery partition.........except my doesn't!
So, I have checked the windows and recovery partitions are intact but I cannot get to the recovery partition or repair the windows installation with windows 8.1 repair tools. No, I don't have any backups, other images or system restore options. Clever, aren't I? I only have the original recovery partition (which I can't access) and windows partition to play with. I don't want to lose my OEM Windows 8.1 license...
Any ideas how to salvage this windows installation?
Thanks in advance for any help.

You have made the same mistake as many other people. On this forum we have discussed so many times how it works and tried to explain how all this works.
In users manuals is clearly described that every notebook owner should create recovery media (DVD or USB) and this created recovery media can be used for recovery image installation in case that HDD recovery option doesn't work or in case that HDD is defective and must be replaced.
As I can see you don't have this recovery media. Fact is that HDD recovery installation can be started if notebook has factory settings only. After your Linux experiment this option is gone and there is no way to start it again.
What you can do now? I know it sounds stupid now but if you want to install original recovery image you need to order new recovery media and it can be done on https://backupmedia.toshiba.eu/landing.aspx

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