Question about Western Digital Protege WD400EB 40 GB Hard Drive

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I get a clicking sound. and the drive is not being recognized when i look for it in my computer

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  • Western Digital Master
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The click sound you hear, is referred to as
'The Click of Death'.

I would like you to view this,

http://www.youtube.com/watch?v=vbq8vfs1wYY

[REMEMBER, if you open the harddrive case, the hardrdive is now Junk!

Harddrives are assembled in a Clean Room. This area would make NASA jealous, with it's 99.9 percent dust free atmosphere.

Those who assemble the harddrive don a special suit, and then go through a corridor fitted with air jets. The air jets are at different levels, and direct jets of air to give one final assurance of cleaning.

Opening a hardrdive in any area other than a Clean Room, will cause it's demise]

Reasons a harddrive has the Click of Death.
1.Lack of power.

If you are referring to a WD400EB, you are referring to an IDE harddrive.
There is an area on the back of the harddrive, that has four pins for connecting a power cable.

If you view the back of the harddrive, you are looking at the connection pins.
All the way to the right, are the four pins used for connecting a power cable.

It could be that the 4-pin whitish Molex connector, has come loose from these pins.

A fairly rare occurrence, but perhaps someone has worked on the computer in the past, and the connector was not pushed on all the way.

Or, perhaps the connector did not fit tight in the first place. Moving the computer tower may have jostled it loose enough, so that it is not making a good connection.

The power cable itself going to the harddrive is bad.
Another fairly rare occurrence.
(This shows the whitish, plastic, 4-pin Molex connector that I'm referring to, and where it plugs into on an IDE harddrive,

http://www.playtool.com/pages/psuconnectors/connectors.html#peripheral )

If you look inside your computer, you may find a Molex connector that isn't being used. Unplug the existing one from your harddrive, and plug this one in.

All the Molex connectors you see inside your computer use the same color codes on the wires, and deliver the same voltages.

Doesn't matter if there is a letter/number code, on the side of the Molex connector. You can use any one you like.
(Red is 5 Volts. Yellow is 12 Volts. The two Black wires are Ground wires)


2.Integrated Circuit, (IC. Also referred to as 'Chip'), has failed on the hardrdrive.
On the bottom of a harddrive is a circuit board. There are IC's, as well as other electronic components.

Trying to diagnose which IC, or other electronic component that may have failed, is a waste of time.
Even if you see a failed component by obvious visual signs of failure, trying to replace it requires the correct tools, and lots of experience.

It would be more logical in this case, to find another working WD400EB harddrive, remove the circuit board of off the bottom of it, and install it onto the defective harddrive.
This way you can reinstall the harddrive, get the needed information off of it, by copying all needed personal data, and making a backup.


3.Lack of data being transferred back, and forth from the processor.

Check the flat ribbon cable which goes from the harddrive to the motherboard. These can fail, and will have no visual signs of failure. (Flat ribbon cable = Interface Cable)

The way to check the cable, is to replace it with a known good one.

4.The harddrive has reached the end of it's 'Life-Cycle'

All mechanical components inside a computer, have so many hours of usage. This is referred to as a Life Cycle.
Your Western Digital 40GB IDE harddrive has some age on it. It may simply be at the end of it's Life Cycle.

I don't know if you are aware of the following, due to not knowing your computer expertise. Please disregard the following if you are already aware.

1.Before opening a personal computer, the computer should be unplugged from power.
Not only does it insure your safety, but also the safety of the hardware components inside.

After you make your repair, then plug the computer in, and wait at least 30 seconds, before you turn the computer on.

2.ALWAYS TOUCH the metal frame of the computer case before reaching inside.
Your body carries Static electricity, and Static will fry out the hardware components inside your computer.

Advise work on a table. A bed, couch, or directly on a carpet floor are High areas of Static.

Should you get up and leave for any reason, when you return touch the metal frame again.
(Or wear an ESD wrist s-trap, and connect the alligator clip to the metal frame of the computer case.
Electro Static Discharge. Average cost is around $6)

Posted on Dec 09, 2009

  • joecoolvette
    joecoolvette Dec 09, 2009

    Just to make sure there is no miscommunication,

    The computer should ALWAYS be unplugged from power before reaching inside. It should be unplugged from power, before you touch the metal frame of the computer case.


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  • Expert
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Hello,
This is due to the motor failure in the hard disk drive ..if it under warranty please contact service center for replacement ..
Thank You ..

Posted on Dec 09, 2009

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  • Master
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I am sorry to report bad drive. Your head is not moving at all.

Posted on Dec 09, 2009

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