Quote from: Danien84 on December 25, 2014, 08:21:58 PM

It is on blockchain.info. I stored it with a folder containing multiple documents in drive D. And after installing win it was lost.
How to recover my private key ? Plz help me

Next time, before installing windows, please backup important data.

Which drive did you install windows? C or D? If you installed win on C, your data is still safe. Check disk management, activate drive D.

If you format and install win on D, it depends on which file system you use, FAT or NTFS . If you format with FAT file system, most probably you have lost your key forever.

If you use NTFS, you can still try to recover your files (no guarantee)
Here, let me help you -> Link

Good luck.