Invisable external hard drives

My PC stopped showing my 2 of my external hard drives in Windows 7 Explorer. They are visible if I use the installation of "remove hardware", also on the control panel > Administration > management of the computer and at least one program. They are connected to my PC by a 7 USB Extender port. My other external hard drive and a stick of memory are also connected using the Extender the same and both appear in Windows Explorer. The disk hard 2 appear when I use them on another computer. It started a few days ago. Can anyone help?

That's what I suspected. See a preview of your disk manager would have confirmed my suspicions.

Be sure to mark my suggestion as "Response" to your question.

Tags: Windows

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