reinstall os X will not recognize
My sister gave my son her old MacBook. She erased before giving and I am having trouble reinstalling the OS X Mavericks. It will not recognize my Apple ID or my sister’s original Apple ID.
When I get to the reinstall point where I sign in to download the OS from the App Store, I enter my Apple ID and password but it says “Your Apple ID or password is incorrect”. I am sure it is correct and it sends an authorize use message to another device with a ID verification code. I have tried this numerous times with my Apple ID and my sister’s ID. We both get authorize use messages on our other Apple devices and a code to enter, but the MacBook still says the “Your Apple ID or password is incorrect”. If I click on the “forgot” link it does nothing and same with the Forgot Password pop up that come with two attempts.
I have set correct date and time in Terminal Function, used the disk utility to re-erase the drive, and to verify and repair the disk. The verify and repair checks show no problems.
Can anyone tell me how I can reinstall the OS? My sister does not have any physical disk with the OS and was the original owner.
MacBook