Solved computer had multiple unexpected shutdowns

Lenovo Ideapad y500 15.6" led notebook -...
February 17, 2014 at 19:59:37
Specs: Windows 7
My computer died after buying charger with current rated higher than laptop's rating. I noticed a lot of unexpected shutdowns and a pop on the last unexpected shutdown.

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February 17, 2014 at 22:56:25
You have probably "fried" several components inside, in which case it will need a new motherboard. Take it to laptop repair shop if you don't know how to fit a new one.

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February 18, 2014 at 12:38:37
✔ Best Answer
I doubt the entire computer is ruined. You can probably salvage some parts, such as RAM, HDD, and maybe even the CPU. Usually if too much current went into the computer, it would have fried the motherboard before it got to the other components.

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February 18, 2014 at 13:19:19
My computer died after buying charger with current rated higher than laptop's rating.
That is not a problem. A higher current rating should not have done any damage.. Providing everything else is working correctly, the computer will only draw the amount id current it needs to do the job. The voltage is the only thing that needs to be precise. Having a current rating that is higher than is needed is a good thing as it means you have power in reserve.

Whatever the problem was, it wasn't excessive current from the power supply. The only time you will get to much current going on the computer is if you have a short circuit. What may have happened is that the polarity was reversed as there is no standardisation as whether the out or the inner part of the plug is +-.


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February 18, 2014 at 14:32:47
As per StuartS. The current rating is just the amount the power supply is capable of delivering. It has to be at least the same as the correct one and being higher doesn't matter.

If the voltage output is higher that is quite a different matter - overvoltage can kill things as can incorrect polarity if dc.

Was there some issue before you changed the charger? If so maybe there was something about to pop and it had nothing to do with you changing the charger.

Always pop back and let us know the outcome - thanks

message edited by Derek

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February 19, 2014 at 01:58:22
I'm with StuartS and Derek; A higher/current/wattage rating would do no harm, as long it is a 'proper' power supply, designed purely for laptops.

In addition; Why did you need to replace the original power supply? Had it failed completely?
I've known folk replace the power supply, when the fault was actually a bad connection on the laptop itself (not a repair to be carried out by the inexperienced).

Perhaps the new unit is faulty; some of the very cheap chinese imports can mis-labelled, of very poor quality - and indeed, dangerous.

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