New hard drive for asus laptop?

I recently damaged my laptop hard drive, when I had dropped my iphone and Lifeproof case on the right side of my mousepad. My computer does not recognize it anymore, and when I start it up, instead od hearing a constant whir like it should it is a disrupted whir. If it had a visual, it would be this:
Normal:___…
Mine:_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

I think it is damaged and i'm told not to open it (the hard drive little box itself) so I need to know which hard drive to buy. The laptop is an ASUS laptop pc with AMD e2-18000 processor. Please help me, this is urgent. I'm using my brother's computer right now.

Just buy any a new hard drive. Buy any 2.5 internal hard drive not external as external means outside and internal means inside. Also make sure they are sata and not pata. Any sata 2.5 hard drive will do.

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