Windows 7: All Flash Drives & External Hard Drives NOT ACCESSIBLE?

I set up a new computer. Windows 7 Pro 64x
Everything was fine but then I connected a flash drive to it and I get:

Location Not Available
H:\ is not accessible. Access is denied

If I go into the properties to the “security” tab, it says “you do not have permission to view or edit this object’s permission settings”

If I go into the “owner” tab of Advanced Security Settings, current owner says “Unable to display current owner”


This is on every flash drive and portable hard drive on all 4 usb ports.
I am logged in as the administrator and there is not even another user account on the computer
I’ve run sfc /scannow

I’m absolutely stumped. I’ve never had this happen on any computer where I couldn’t use an external device.

This is not my computer so I’ll have to do whatever remotely.

Thank you for the help.

Sometimes when I plug in a USB Thumb/Flash drive I get a message about "this device can perform faster if plugged into a USB 2 port" so I shut the computer down and pull the power cord and USB devices from the back of it. After waiting a bit I put everything back and all is good.

This is all the time on 2.0 and 3.0 usb and several flash drives and external hdd

Check whether this helps.

Start > All Programs > Accessories > Right click on Command Prompt and Run as administrator.
Then
diskpart [ENTER]
Against the DISKPART prompt
automount [ENTER]
Does it say "automatic mounting of new volumes disabled" ? Then
automount enable [ENTER]
"automatic mounting of new volumes enabled"

Close Command Window.

Now connect your external drives and check.

What happened when you gave this a "whirl" You do not have permission to view this object's security - Microsoft Community?

Was there a deleted or unknown user? Just curious.