The hard drive is not working. The HDD has all of the files for your computer on it, including Windows, which is your operating system. The computer cannot access the HDD and that is why your operating system is not found.
Try following the instructions here: https://support.microsoft.com/en-us/windows/create-installation-media-for-windows-99a58364-8c02-206f-aa6f-40c3b507420d
If the storage drive is physically broken then you will have to buy a new storage drive and replace it. Follow the instructions here: [guide|52550]
If you do not have the money to replace your storage drive, there is a small trick you can do to see if it will work again. Since your model of laptop has a hard drive, some plates inside it might be stuck, or the needle might be stuck. Try taking the hard rive out of your computer and giving it a solid flick on both sides. Put it back in and see if it knocked the stuck parts back into place.