Based in the detail of the OP. you should do this:
- Put your SD in same position as Image shows
- in the left border is a slide button.
- Slide it UP.
There is the Write protection Disabled.
Я не могу ничего записать на карту памяти SD, используя Windows 7.
Как я могу снять защиту от записи?
Some programs will indicate 'write protected' but that may not always be what's really happening
It can be a hardware problem after all!
So if you are seeing problems and all other tips have exhausted, try another PC or laptop!
Worked for me: controller failures turned up in the windows event viewer (System category). Even with a hex editor separate blocks were writing okay, but writing large chunks would fail at random positions on the card.