Win7 registry is broken solution

When installing DevExpress at night, I was prompted to not register toolboxitems, so google solution, some of them gave a registry code, said to copy to a reg file, and then import the system, so I tried, thinking that there should be no problem There is no backup registry, direct import, after the end, restarted the computer, the tragedy occurred, can not enter the desktop, can only see a cursor on the black screen, repeatedly restarted N times, still not, So tried the following solutions:
1, using win7 system U disk to repair, the results are still not
2, using the registry repair tool, the results suggest that the corresponding dll file can not be found
3, the use of the system Restore, but did not establish a system restore point
Finally, replace the existing one with the registry file backed up by the system itself, this will be solved.
The specific approach is to use the win7 system U disk boot, then enter the repair interface, open the cmd window, enter the following directory in the command line:
C: windowssystem32configRegBack directory, and then use the copy command to the directory All the files are copied to the C:windowssystem32config directory, and then restart the computer is ok.
A thrilling, almost reinstalled the system (reloading the system is very fast, the problem is that the software and configuration are gone, need a little installation settings).