Solved HDD is damaged because of AC Adapter with less ampers?

April 9, 2014 at 00:07:26
Specs: Windows 7 64 bit, 2.26 Ghz, 4 GB
Hello. I need your help.

I have laptop HP 1253-cl (

I have problem with HDD's. I had WD Scorpio Blue 500 GB and it stopped working. But, what is maybe problem, before it stopped to work i had problem with ac adapter.

It was damaged but it worked and soon my laptop was slower and slower because of hdd and after buying new ac adapter, laptop worked but again slower and slower.

In recent time i've changed hdd and took it from some used laptop and after using it some time it is showing same symptoms like my first HDD. What i'm guessing is, new ac adapter is not 4.74 amperes like old one, new ac adapter is 3.5 amperes, but is it 19V like old one.

What i would like to know, is it possible that ac adapter with less amperes can damage HDD ? First and main symptom is slower laptop. I'm planning to buy fresh new HDD but how good idea is to use new hdd with old ac adapter?

And, when i pull out battery there are taped informations and there i see: first line: 18.5V 3.5 ampers second line: 19V 4.74 ampers.
p.s. it should not be related to Windows, i do install every time, and on new (used) hdd..

Please ask if you need more information.

message edited by chevap

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April 9, 2014 at 00:48:54
✔ Best Answer
What i would like to know, is it possible that ac adapter with less amperes can damage HDD ?

No. More likely it will damage the power supply as it struggles to keep up with the demand being put on it. Evven one with more amps needed will not damage the hardware as the power supply will only supply the amps demanded from the hardware..

In this case the hardware is demanding more than the power supply can supply. To little volts will have a similar effect. To many volts will kill the hardware instantly.

What may be happening is that because of the shortage of power the hard disk is spinning too slowly or irregularly and causing data reading errors and the constant
re-reading is slowing the machine down.

So the first thing I would do is get a properly rated power supply for your computer. Right voltage +- 1 volt but Amps can be greater than required but never less..


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April 9, 2014 at 01:53:33
Thank you for reply. And what do you think about informations when i pull battery out:

18.5V 3.5 ampers
19V 4.74 ampers

How can i have 2 types of supply. This is written on laptop mask when battery is out.

Does this means i can use ac adapter with 3.5 or 4.74 amps?

message edited by chevap

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April 9, 2014 at 02:14:06
I have no idea why it should show two different power ratings. The difference in voltages is negligible.

Why the difference in Amps may be to accommodate different configurations fo the same machine. Your best bet would be to contact HP and see what they say about it.


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