[譯自]http://www.mydigitallife.info/2007/05/21/trick-to-play-both-hd-dvd-and-blu-ray-discs-bd-in-powerdvd-ultra/ PowerDVD 7.1 home theater audio, and high-definition Dolby Digital Plus and DTS-HD. PowerDVD Ultra安裝後只能選看HD-DVD或Blu-ray其中一種,不能兼顧。 如果ultra想兼顧 1. Uninstall and clean the system from any PowerDVD files if you have any installed version: * Uninstall PowerDVD Ultra from “Add and Remove Programs” in “Control Panel”. * Delete all CyberLink program folders (normally located in \Program Files\ folder). The processes of PDVDServ.exe and RichVideo.exe may needed to be killed if existed by using Task Manager. * Delete all CyberLink registry entries listed below: HKEY_LOCAL_MACHINE\SOFTWARE\CyberLink HKEY_CURRENT_USER\Software\Cyberlink 2. Disable HD-DVD drive in Device Manager. 3. Install CyberLink PowerDVD Ultra Blu-ray edition with valid registration key. 4. Kill PDVDServ.exe process in Task Manager. 5. Reneme \Program Files\CyberLink\PowerDVD folder ...