Any MacBook experts around to help, please?

[Nicknamegrief]

We Have a MacBook Pro and tonight when we try to turn it on it constantly tries to restart itself.... We don't get past the initial 'apple' screen.
My DH has looked on Google/you tube and checked the hard drive which said it was fine.

Any ideas?

He needs it for work tomorrow, urgently.

Many thanks.

The only thing you can do is call the help number, we have found them great and they talk you through everything if it is something that can be remedied by yourself.

Thanks. We managed to get it to the recovery screen and reinstalled the operating system and all appears to be well.