Dual Boot HSierra Win10 : Win10 isnot working anymore

[gbenj]

Hello,

I searched on the forum and loked many topics, but too much informations which are not my exact problem.
i tried few things, but now i prefer to post a message.

I have this configuration :
1 - hard drive with 3 partitions :
- 1 - Sierra
- 2 - Win10
- 3 - Win10 (i just erased to try to reinstal windows)

2 - hard drive with 1 partition :
- High Sierra

I just installed High Sierra few days ago,
and maybe because of a bad manipulation, i lost the windows 10 boot.

Windows 10 partition is visible in Sierra and High Sierra.

When i boot from a Windows 10 USB Key, it says that my windows need to be repaired.

If somebody can help me, i will try to answer the questions and apply the steps.

Thank, Best regards,

Gb

 

[Going Bald]

Disconnect the Mac OS drive and the extra drive (1 & 3)
boot with the Win10 installer and select repair Win10.