MY acer laptop after i power on it perform preparing automatic repair but after some time it doesnt contiune , it leave black

[De Shadow]

it once it felt to the floor , after that the problem begain..after i power on it perform preparing automatic repair but after some time it doesnt contiune , it leave black

 

[hang-the-9]

Most likely the hard drive failed, remove yours, using an external enclosure copy your files out if you can. Get a replacement drive, install Windows on that. You can try just reseating the drive in the case, but it does not sound like that will help your issue, if the connection was bad you should just get a "no boot device found" error.