First of all, thank you for your help.

I tried SFSDoctor but every partition was OK.
I booted on the CD and made some copy from SSD to Ram: and then Ram: to SSD. First, it seemed to be ok, but after a few copies, the same problem appeared.
I installed the SSD without the adapter but same.

At last, I made a full copy of my SSD on my old and slow HD. The copy was veeeryyyy long. And, the SSD stalled all the access. I toke a grab of Task Manager and all portions with low CPU were when the copy stalled.

SSD-Task.jpg

Hope my new HD will be more effective and I'll be able to use these beast at all its power !

Thx again !