you have on your computer another software (or plugin ou first part) which is in communication with poser8.

if i was you :

• i backup all
• i format my hd
• i install the OS only ! (a real one, not a hacked one)
• i install the mb drivers (intel utility..), then video drivers and sound drivers
• i update the OS (windows update)
• i install poser 8 and check if all is ok
• if not, then you have a drivers problem issue with poser8
• if yes, then i go to reinstall each software i use ONE BY ONE BY CHECKING permanently Poser8 issues
  this is the mehod to find out witch software/part creates this issue

good luck !

ps : do not install antivirus, neither other pre-install sofware of your computer brand (sony app, norton app,  acer app, install JUST THE OPERATIF SYSTEM and POSER)