Help ! My primary master is inacessible

[Paladinfr]

Hi.
Sorry i'm french and my english is not very good.

i've got a big trouble with virtual box.
This morning the electricity was cut and my server shutdown.
When the electricity came back i tried to start my virtual machine and it was impossible.

I have the error :
"failed to open session for the virtual machine"
no error info
result code : e_fail

and my ide primary master is inaccessible.

i really don't know what to do...
can somebody help me ?

edit : i made a clone of the machine 10 days ago, can it help me ?

[Paladinfr]

i wasn't able to restore my vm...
i tried by using windows 7 by mounting the vhd file but it didn't work.

i was able to use a snapshot, but i loose 10 days....