Check you've installed PD as an administrator of the PC.
try the following way to re-install PowerDirector:
a.) Start--> Programs -->Cyberlink PowerDirector --> Uninstall PowerDirector
b.) Start --> Run --> type "regedit" --> click "HKEY_LOCAL_MACHINE" --> click "Software" --> locate "Cyberlink" ----> click the "+" (if you have more than one CyberLink product) -->Delete the "PowerDirector" folder
c.) Start --> Run --> type "regedit"--> click "Hkey_Current_user" --> click
"Software" --> locate "Cyberlink" ----> click the "+" (if you have more than one CyberLink product) -->Delete "PowerDirector" folder.
d.) Delete C:\Programs Files\Cyberlink\PowerDirector
And reboot your PC.
After this, please install your PowerDirector.
It does appear to me to be your PC that's at fault.
Dafydd