I am assuming that this cam in not built into the computer. If not then go to the System Configuration Utlity and delete all of Philips stuff from there.
You only wish to start up what you wish to not when the computer does. Lots of rubbish gets in there and just slows down the pc like, java, pdf, office stuff, just delete it all.
Some computers have a hidden partition & there is software to protect that partition, so be careful not to delete that. Like Advent use RECGUARD/ Pc Angel.
Google everything if you must but most pc's will function normally with nothing in there, but you need your antivirus ok!