Some newer computers do not respond to the safe mode boot trick neemo suggests. In that case, it could be because the hard drive has failed, and safe mode will not work at all if that's the case. Did your daughter drop that laptop since she's had or loan it to a friend or family member who might have done so?
If that's the case, you need to return the laptop to the place your purchased it and have them fix or replace it if it's less than 1 year old. It would be covered by the Factory Warranty by most major laptop makers. If you bought at a retail store (brick-and-mortar store) such as Best Buy or Staples, they will have you call the manufacturer is most cases to exercise the 1 year warranty. Even if you bought an Extended Warranty, the retailer will most likely have you ship it off to the manufacturer or take to a local factory authorized depot center for the repair. In the US this will cost you about $60 or so with Insurance at Full Purchase price to ship back to them. Once they repair it, they will ship back to you at no cost on their dime. The problem with this is it can take from 3-11 weeks to get that laptop back from the factory.
Another issue is Data Recovery. Does your Daughter have homework, music, movies, E-mails stored on that laptop? If so, and you send it back to the factory for repair, they will wipe your hard drive clean if they repair it and drive still works. If the hard drive has failed and that's the cause of the problem, they will replace the drive, and all her data is gone! You must make sure that when you talk to the factory tech on the phone when you schedule the repair that you want
DATA RECOVERY done on the drive
UP FRONT. They will most likely tell you that they must charge you for this, and it can be anywhere from $150-$550 or more.
Hopefully, she or you have previously made backups of any personal data stored on that laptop to external media. So, you could have bigger and more expensive issues here than just getting the laptop to work again.
Best of luck,
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