Macbook Air admin problems
I just bought a Macbook Air off craigslist, it is stuck on Kiosk account rather than admin. I cannot log into the admin account, even when I reboot the computer it automatically logs in to Kiosk. I can't change anything without admin password, it shows that it has 3 Admin accounts, BestBuy, experience, and My Mac. However it won't let me change anything or even log into the internet without an admin password, what can I do to fix this problem?