I had a similar problem ... turn off ur PC,plug the cables off and then on,turn the PC on and try again (For Laptops turn them off take off battery and back).
I think u are doing something wrong, read it careful and repeat the steps one for one.
*Delete the logfiles include the DBO map folder.
*Uninstall DBO ( include DBO MAP folder ), Re-install it.
*Download the new patch update.. Patch it, ( Right-click run as Administrator )
*After the patch, run the launcher as Administrator, if you have any other account, try to login with that.
Be sure u are logged in as a administrator, or it doesnt work!
I hope this fixed ur problem.
It Didn't work :/ i reinstalled it like you said and followed all the instructions,but it still didn't work. But thanks for the guide you probably helped alot of other people