Seagate External HD keeps unplugging randomly when playing media. Why?

USB 3.0 on seagate, connected to my Lenovo x1 carbon USB 3.0 ports.

Mainly when I'm playing music or watching shows from files on my harddrive, it disconnects and gives me an error message saying the file can't be read or doesn't exist. When it connects, it connects back INSTANTLY.

I copied the files this was happening to to my harddrive on my computer, and the problem stopped, so the files are NOT CORRUPT! I downloaded the drivers for USB 3.0 from the lenovo website, the seagate drivers are installed, but it just keeps disconnecting randomly when playing files from the harddrive. Whats the problem?

I tried everything. I downloaded the drivers

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