I can't unlock acer 5620-6830 lap...

i long ago researched acer's policy of having buttons or camera lenses on their laptops when in fact there are no actual devices installed inside their laptops. It seems that unless it is actually specified as a featured specification you can be misled in assuming that things look like its there and its a deal.
LOOK at the box spec listings always. there are dongles and add-ons that you can purchase to make things work eventually. GO FIGURE. convenience and high price or cheap fixes.
MY THINKING is...get a solid basic machine for the bargain price with the latest processor and add on things like RAM,Hard drive, lightscribe burners, cameras and wifi cards.