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When power is plugged into external hard drive, the hard drive starts to power up and then approx 3 seconds after it powers off.

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You have a bad power supply. Try taking out the drive and placing it in another case. Start here: http://www.newegg.com/Store/SubCategory.aspx?SubCategory=92&name=External-Enclosures

Posted on Mar 20, 2011

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Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

Posted on Mar 20, 2011

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Samsung external hard drive


!! You have failed to provide a detailed problem. !!


External hard drives are plug-and-play devices used to store music, video and data files. Once the drive is connected, the computer checks its systems for the appropriate drivers, loads them, and the external drive is ready to use. If the computer does not recognize the external drive, plug it into another computer to ensure the drive is not corrupted. If the drive is good, a few simple steps should help re-enable the drive for use.
Switch the power button to "off." Disconnect the power cord from any extension cords or power strip, then re-seat the power cord into the hard drive. Connect the cord directly into an outlet and power up the drive. If the drive is powered and still not working, check the data cable. Power down the hard drive and disconnect the data cable from the computer. Wait 30 seconds to one minute. Reconnect the data cable and power up the drive. If the drive is not detected, power down the hard drive and connect the cable to a different port. Power up the drive. If the drive is detected but not working, check for a missing driver. Click on the "Start" button, right-click "Computer" and select "Manage." Enter your administrator password if requested. Select "Device Manager" and double-click "Disk Drives." Right-click the yellow exclamation point and install the missing driver. Close the Device Manager. If the drive is detected but not working check to ensure it has an assigned drive letter. Disconnect all devices connected by USB cables from the computer. Reconnect the drive's data and USB power cables directly into the computer. Click on the "Start" button, right-click "Computer" and select "Manage." Enter your administrator password if requested. Click on "Disk Management," right-click the external hard drive, click "change drive letter and path," and click "Add." Assign a drive letter. Avoid using A, B or C (C is usually assigned to the computer's internal hard drive). Click "OK" close the window. If the drive is detected but not working, check whether the drive is in sleep mode. Disconnect all devices connected by USB cables from the computer. Reconnect the drive's data and USB power cables directly into the computer. Click the "Start" button, right-click "Computer" and select "Manage." Enter your administrator password if requested. Select "Device Manager" and double-click "Universal Serial Bus Controllers." Double-click the first instance of "USB Root Hub" or "Root Hub." Check for the hard drive. If the drive is not visible, move to the next instance of "USB Root Hub." Continue checking each instance until the hard drive is located. Once located, click the "Power Management" tab and uncheck the "Allow computer to turn off this device to save power" box, click "OK," then close the Device Manager. Power the computer down, wait 30 seconds to one minute, and power the computer back up to ensure the drive is detected.

Jan 29, 2013 | Samsung G2 Portable External HX-MU064DC/...

1 Answer

Pc does not recognize external drive


External hard drives are plug-and-play devices used to store music, video and data files.

Once the drive is connected, the computer checks its systems for the appropriate drivers, loads them, and the external drive is ready to use. If the computer does not recognize the external drive, plug it into another computer to ensure the drive is not corrupted. If the drive is good, a few simple steps should help re-enable the drive for use.
Switch the power button to "off." Disconnect the power cord from any extension cords or power strip, then re-seat the power cord into the hard drive. Connect the cord directly into an outlet and power up the drive. If the drive is powered and still not working, check the data cable. Power down the hard drive and disconnect the data cable from the computer. Wait 30 seconds to one minute. Reconnect the data cable and power up the drive. If the drive is not detected, power down the hard drive and connect the cable to a different port. Power up the drive. If the drive is detected but not working, check for a missing driver. Click on the "Start" button, right-click "Computer" and select "Manage." Enter your administrator password if requested. Select "Device Manager" and double-click "Disk Drives." Right-click the yellow exclamation point and install the missing driver. Close the Device Manager. If the drive is detected but not working check to ensure it has an assigned drive letter. Disconnect all devices connected by USB cables from the computer. Reconnect the drive's data and USB power cables directly into the computer. Click on the "Start" button, right-click "Computer" and select "Manage." Enter your administrator password if requested. Click on "Disk Management," right-click the external hard drive, click "change drive letter and path," and click "Add." Assign a drive letter. Avoid using A, B or C (C is usually assigned to the computer's internal hard drive). Click "OK" close the window. If the drive is detected but not working, check whether the drive is in sleep mode. Disconnect all devices connected by USB cables from the computer. Reconnect the drive's data and USB power cables directly into the computer. Click the "Start" button, right-click "Computer" and select "Manage." Enter your administrator password if requested. Select "Device Manager" and double-click "Universal Serial Bus Controllers." Double-click the first instance of "USB Root Hub" or "Root Hub." Check for the hard drive. If the drive is not visible, move to the next instance of "USB Root Hub." Continue checking each instance until the hard drive is located. Once located, click the "Power Management" tab and uncheck the "Allow computer to turn off this device to save power" box, click "OK," then close the Device Manager. Power the computer down, wait 30 seconds to one minute, and power the computer back up to ensure the drive is detected. Hope this helps.
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Jan 07, 2013 | SmartDisk Verbatim 96867 2 TB External...

2 Answers

Imation 1TB USB external Hard Drive .....unrecognized in Windows Both in windows7 and XP.


External hard drives are plug-and-play devices used to store music, video and data files. Once the drive is connected, the computer checks its systems for the appropriate drivers, loads them, and the external drive is ready to use. If the computer does not recognize the external drive, plug it into another computer to ensure the drive is not corrupted. If the drive is good, a few simple steps should help re-enable the drive for use.
Switch the power button to "off." Disconnect the power cord from any extension cords or power strip, then re-seat the power cord into the hard drive. Connect the cord directly into an outlet and power up the drive. If the drive is powered and still not working, check the data cable. Power down the hard drive and disconnect the data cable from the computer. Wait 30 seconds to one minute. Reconnect the data cable and power up the drive. If the drive is not detected, power down the hard drive and connect the cable to a different port. Power up the drive. If the drive is detected but not working, check for a missing driver. Click on the "Start" button, right-click "Computer" and select "Manage." Enter your administrator password if requested. Select "Device Manager" and double-click "Disk Drives." Right-click the yellow exclamation point and install the missing driver. Close the Device Manager. If the drive is detected but not working check to ensure it has an assigned drive letter. Disconnect all devices connected by USB cables from the computer. Reconnect the drive's data and USB power cables directly into the computer. Click on the "Start" button, right-click "Computer" and select "Manage." Enter your administrator password if requested. Click on "Disk Management," right-click the external hard drive, click "change drive letter and path," and click "Add." Assign a drive letter. Avoid using A, B or C (C is usually assigned to the computer's internal hard drive). Click "OK" close the window. If the drive is detected but not working, check whether the drive is in sleep mode. Disconnect all devices connected by USB cables from the computer. Reconnect the drive's data and USB power cables directly into the computer. Click the "Start" button, right-click "Computer" and select "Manage." Enter your administrator password if requested. Select "Device Manager" and double-click "Universal Serial Bus Controllers." Double-click the first instance of "USB Root Hub" or "Root Hub." Check for the hard drive. If the drive is not visible, move to the next instance of "USB Root Hub." Continue checking each instance until the hard drive is located. Once located, click the "Power Management" tab and uncheck the "Allow computer to turn off this device to save power" box, click "OK," then close the Device Manager. Power the computer down, wait 30 seconds to one minute, and power the computer back up to ensure the drive is detected. Hope this helps.

Jan 07, 2013 | Imation 1TB Cartridge (IMN27957) Hard...

1 Answer

My WD external hard drive has suddenly stopped being recognised by my computer


Unplug the power supply from the hard drive, leave for 15 seconds.

Plug power supply back in.

Try another USB cable if that does not work.

Aug 08, 2011 | Western Digital Elements powered by WD 320...

1 Answer

Wd3200bmvs-11f9s0 not being recognised by any computer. do the jumper pulgs need to be bridged in any certain way


hello

do this and it should work : unplug the power and USB cords from the external WD drive

wait 20 seconds. plug the power cord into the drive (make sure the other end is plugged into the wall)
wait 20 seconds, plug the one end of the USB into the computer, and the other end into the WD external drive.

in a few seconds, your computer should see and activate the WD external drive.

thanks for using FIXYA -- please make sure to send me 4 thumbs up

May 10, 2011 | Western Digital Passport 320GB External...

1 Answer

Please i need the power adapter rating for seagate


Have you got the original power adapter?
If so the voltage details are printed on the label on the bottom of the adapter.
If the external USB Seagate hard drive houses a 31/2" drive then it requires an power adapter that provides +12 volts and +5 volts both supplying approx 2000mA of current.
If the Seagate uses a 21/2" (laptop) hard drive then it only requires +5 volts power adapter.
The only problem is the power connector to the external drive, make sure it suits the external hard drive unit and the power pins are correctly wired for the Seagate. If the polarity of the plug is incorrect lt wired (ie reverse polarity) then it could damage the USB hard drive and adapter case.

Nov 20, 2009 | Seagate (ST3500601CB-RK) (ST3400601CBRK)...

2 Answers

I have a WD 1600U EXT USB DRIVE. IT WORKS GREAT ON MY DESKTOP; HOWEVER WHEN I PLUG INTO MY LAPTOP, THE BLUE BLICKS, MY LAPS ACKNOWLEDGES USB CONNECTION, BUT IT JUST LOADS, STOP, RELOAD UNTIL I UNPLUG IT


I have had the same problem with laptops and USB drives. The external drive simply is not getting enough power.

The two solutions that seem to work are:

1) External power adapter for the USB Drive. Many external USB drives have a micro power plug next to or near the USB plug. A 5 Volt adapter (which plugs into the wall OR one that plugs into your cigarette lighter plug in a car) will cure this problem.

2) Some external USB drives come with a plug which has (2) USB plugs which plug into your laptop (laptops typically limit the power for each USB port) and one plug on the other end for your USB drive.

Oct 28, 2009 | Computers & Internet

1 Answer

500Gb SimpleTech Ext Drive No Power


Hello.
It sounds like you might have a problem with the power supply.
I have seen MANY external hard drives with failing power supplies. Take it to the store you purchased it from for a check up, it should still be under warrantee if its only 3 months old.
Good Luck!

Jun 17, 2009 | SimpleTech SimpleDrive Pininfarina 500GB...

1 Answer

External not being recognized


can you tell me the power/current ratings, for each of those power packs, and also, make sure that the ring configuration(positive/negative) are the same?

Mar 03, 2008 | Seagate FreeAgent Pro - 500GB, 7200 RPM,...

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