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External USB Harddrive Peoblem...Unusual

Posted on 2007-10-19
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Last Modified: 2008-01-09
I have been using several different USB External enclosures all with different drives ....basically with no problem at all. All of a sudden for no reason I am having a serious problem that must be something other than drive failure. Drive worked normally when plugged into a normal 2.0 USB port. Info window would come up, drive would show up in Explore (Sometimes taking over a drive letter that needed changed...but not always) Disk management would always show the drive with no problem. For no reason...(I didn't drop anything or zap the drives with static or anything like that) the drive will not show up. Computer would do the normal beep of recognition....then after about 30 seconds or so the removal beep would sound. The drive showed up in the device manager.....but for the life of me I can't get it to show or stay recognized. Drive was working fine. A third enclosure I have still works fine. I had one that worked fine so I took the drive out of the failing enclosure and put it in the enclosure that was working with another drive....still no go....THEN when I put the working drive back into the enclosure that it was working in, it started to do the same failure as the one I was having trouble with. Now I have two separate enclosure with two drives both failing. ..One does the Recognize beep .....30 secs later......removal beep.No show anywhere. The other gives the recognize beep and shows up in device manager but not in Disk management.

Any ideas.......how do I troubleshoot these darn things.
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Question by:rspalding
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Accepted Solution

by:
ghiggins78 earned 1000 total points
ID: 20113774
Are you plugging the devices into the front USB ports of your computer?
Try plugging the external drive into the back USB and see if there is a difference.
The front USB's often dont have the power to run external Hard Drives stable.
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Assisted Solution

by:nobus
nobus earned 1000 total points
ID: 20114175
what external cases are they? do they have their own power supply?  If not, you may have overloaded the usb port power, which is MAX 5V at 0.5A  = 2.5 W
you can test the external cases and disks on anothe r working PC
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Author Comment

by:rspalding
ID: 20116693
I am sure it's not a power problem...Have an external adapter and or a double connection cable.The one I am looking at now is a Toshiba drive....still appears in device manager but zippo on explore or Disk management. Same recognition beep ...no disconnection beep is heard so the computer sees te drive........this really is a problem I have been seeing often. Many people in my network have had this problem and have considered entire drive bad due to lack of options for diagnosis. This drive has das on it that I looked at only a few days ago with no problem??????????????
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LVL 93

Expert Comment

by:nobus
ID: 20117123
did you test the disks and cases on other PC's?
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Author Comment

by:rspalding
ID: 20118145
will do as soon as I am near another PC...will report back
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Expert Comment

by:ghiggins78
ID: 20213969
Have you fixed the problem yet?
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Author Comment

by:rspalding
ID: 20277325
I apologize for not getting back on this......the problem is no longer an issue due to the fact my house burnt to the ground late night on the 2nd. It was an electical fire and my wife and I just got out in time.....lost my Lab and favored cat. I will distribute the points for your efforts...thanks Rick
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LVL 93

Expert Comment

by:nobus
ID: 20278196
sorry to hear that - and luckily all is well with you ..
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