Your parents don't want you posting videos of yourself on YouTube to complete strangers as you're under the age in the Terms-of-Service would be my guess.
Speaking of Terms-of-Service.
It's one of Toms Hardware Forums Terms-of-Service not to assist people to bypass security features of computer systems.
The solution is within the error message you are getting anyway:
- "this webcam has the parental control feature enabled. Please type the password to activate your webcam."
Buy your own 'personal' computer/laptop and Internet connection when you're legally old enough to post videos on YouTube is the best advice we can provide.