some users of PowerDVD 11 have issues with the region code locked to 'A' and no changes left. In most cases, the reason for this strange behaviour is a former installation of PowerDVD 7 - 10. These former versions of PowerDVD control the region settings different from the actual version PowerDVD 11. The bad news is that simple deinstallation of the former versions won't help because the region control files neither are part of the deinstallation routine nor can they be deleted, and thus can come into conflict with the region setting of PowerDVD 11. The good news is that you don't need to reinstall your windows (Vista & Win 7) - you can deactivate the buggy region control by
Disabling Brs.exe from loading at Startup (control panel - administrative tools - system configuration - startup tab)
Look for cyberlink brs and clear its checkbox. Click Apply to save your changes and exit the dialog box.
Restart your system. The next time you boot up, brs.exe won’t be running. Now you can proceed directly to deleting the BRF.dat file located in C:\ProgramData\Cyberlink\BDNAV\.
(When Brs.exe is running, only PowerDVD can alter or remove BRF.dat which saves BD region settings. By default, brs.exe is located in C:\Program Files\CyberLink\Shared Files and cannot be deleted. It allows the user to change the region coding of their player up to a maximum of 5 times. The program also makes an entry in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run that enables it to load at system startup.)
Open PowerDVD 11 - everything should be allright (e.g. Region B with 4 changes left) ! If you prefer a complete new installation of PowerDVD 11, you should at first manually delete all directories which have been set up by PowerDVD (c:\Program Files\CyberLink\ , c:\Program Files\PDVD, C:\ProgramData\Cyberlink\, C:\Users\XY\AppData\Local resp. Roaming\Cyberlink\ )
I hope this information can help.