Well, it doesn't sound good.
And the traveling distance makes it difficult to visit, right!I don't suppose you had Applejack installed on it... Still, she might try starting up with the
shift key held down
immediately after she hears the startup tone. That will help determine if it's the drive or the OS. If it startup, the drive is ok. If not, there is probably some corruption in a Start Up item or a non-Apple file.
Thanks for that advice Airbus - she was able to start the laptop in safe boot.
Then of course she complained that she could not connect to wifi and detect the internet.
So I told her to do it in normal, snd she got the blank screen again.