Clicking noise from Ac adaptor while charging using 600W inverter

I am trying to charge my laptop from a 12 volt battery through a 600w inverter.
However the latop won't charge and the charger just makes a clicking noise.
Does any one know why this is?
And can anyone help me?

I have no idea why the AC adaptor makes such clicking noise but this does not sound good.
You should use an compatible car ac adaptor for the notebook since wrong car adapter could damage the notebook.
Would recommend contacting an Toshiba service point in your country to get a right part.
You could also check some independent online resellers to get such part.

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    I've had my share of hard drive failures, and that repeated clicking sound is a telltale sign. Yours is not the infamous Firmware 7.01 drive which were all of the Seagate Momentus 5400.2 series. Sounds like a simple random crash. Unfortunately, these things happen.
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    Since replacing my G5 with a new mac mini I hear frequent clicking noises from the APC Back-UPS that I have it plugged into. The only obvious difference is that the mini has an ungrounded two-prong plug while the G5 had a grounded three-prong plug. The clicking noise consists of two clicks in succession, the second one slightly lower in pitch. This occurs at random intervals but also in response to anything that I'm doing on the computer such as opening or closing an application, resizing a window, visiting or exiting a website, etc. Occassionally it will happen when the computer is asleep in which case I will hear the fan running briefly in the mini although the monitor doesn't wake up. When this happens I will often see the internet activity monitor light flashing on my dsl modem. I don't know if these noises are a sign that something isn't working properly or just an annoyance. In either case I would welcome suggestions on how to stop it as well as any ideas as to what might be causing it. The APC unit provides battery back-up power in the case of a power outage and surge protection. I submitted my question to APC support but got no response. I also talked to someone at AppleCare and he had no idea what was causing this and wasn't even sure if he knew what I was asking about. However lots of people use back-ups units so someone out there must have experienced this phenomena besides me.

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    Hi,
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    weizhou12 wrote:
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    The noise you are hearing might just be the normal sound of the hard drive.  Most hard drives aren't 100% quiet.    The link below is for a Seagate article on hard drive noises for your reference......
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    Owner & Operator of the following:
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    Welcome to Apple Discussions!
    I didn't read all of that long thread, but I have heard of the type of noise you describe being associated with the hard drive. Whether it's benign or ominous or something else entirely is hard to say. But there are a couple of little utilities that can help you evaluate your hard drive:
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    My Fujitsu drive is absolutely silent, and that is what you should expect. My external La Cie makes clicking noises every so often, and always has, so I think that is normal for it.
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