That was the end of October 2013. The board ran reasonably, repeatedly has been activated at the start of Windows CHKDSK, almost every defective cluster were discovered - in short, the board has problems. Since it is the first system disk (on a different, Samsung, running Linux, which is somewhat exciting.
Today, as I suspected, it could be something defective again, I ran CHKDSK, which with the comment: the operation ceased "Volume is clean".
Western Digital's DLGDIAG now breaks with status code 07 from (Failed read test element).
I held so far one of the best Western Digital hard drive manufacturers. That's over now.