With a lot of patience, I managed to rescued valued content.
Though I formated the card in the camera, it turns RAW and 31MB.
Its fragile. I havent found a way to turn it into reliable card yet
Still fighting
After many reset and reboot, I took advantage of the short healthy period and wrote a new Boot Sector although I am not certain if this is a proper measure. Then again, reset and reboot to copy some files until the card goes RAW again. Some files are 4GB each and I dont think that I will have enough ...
I restarted the computer and card is readable now.
But I fear to do anything
I plugged a harddrive in order to rescue 36GB of very valuable information (Video Rushes).
I use Windows Explorer to copy ... process begins but it interrupts.
Card goes to RAW 31mb
Thanks for your reply. I've been very busy the last two days and wasnt able to deal with my problem. This morning I plugged my Card and there was a Windows 10 notification that there is a problem with Drive G: and asked for authorization to repair it. I risked and pressed YES. To my surprise ...
I use a 64GB on my Photo/Video Camera. When I plugged it onto my Microsoft Surface Tablet, it corrupted it. (Damn, this is the 2nd time this tablet corrupts USB sticks or Cards - Lesson learned)
Windows asks to format the card. Disk Manager sees it as 31MB. The card appears as 31MB on TestDisk.