Internal SATA HDD Disappear When USB Device Connecting

Jan 28, 2013

I noticed couple of times that i don't see one of my drives in the Computer window. It also not showing up in the Disk Management window. I didn't know the cause till now. I tried reseating the cables and some other suggestions online with no luck.

Today i noticed the cause: If i am connecting a USB memory or external HDD to the front USB panel it disappears. Disconnecting it (the USB component) won't show the drive back in the list.

I have:
120GB SSD as my C drive.
1TB HDD as D drive.
2TB HDD as E drive.
All are SATA.

The D drive is the one that gets disappear.

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