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It sounds like a defective/incorrect AC-to-DC adapter may have caused your problem. These adapter come with different output voltages, AC or DC output and different amperage ratings. AC-to-DC adapters list the polarity of the DC voltage as it relates to the DC power plug and you must match both the devices voltage and power requirements. As for the amp...not working on batteries either, I would suspect output transistors or IC.
First you shoult remove the battery (it could be short circuited) then try powering up, if it's not working check the AC adaptor with a multimeter to verify voltage (compare with what it is ritten on the AC adaptor) last thing you should remove everything you can (RAM, HARD DRIVE, NIC's, CD ROM, etc...) than try powering up again if it power's up than put back ONE DEVICE/MODULE AT A TIME TO TARGET THE FAULTY DEVICE. if nothing worked i'm sorry it's dead.
yes the lap top can boot up with the ac adaptor without battery .but if there is a problem in its RAM the memory chip.it will still power on with adaptor but will not go further then that.or the other problem can be its main board getting short in between.get the laptop checked at proper professional repair center before further use as because if you just try to turn it on several times the internal components which are short will get heated and will short many other small components and the reparing cost will get increased.
These are prone to broken power jacks that short out components on the mainboard. My shop saaw a lot of these come in dead like this and sometimes we could get them going again with a lot of mainboard work, but it seems they keep breaking.
I would save your money for another laptop considering the lousy reliability record these models have.
Measuring the voltage outputs without applying a load doesn?t eliminate the adaptor as the problem. You also have to know how may amps it can supply as well.
To answer you specific question common problems are defective battery, A/C power supply and my favorite?s defective power connector or circuitry inside.
When you plug in the A/C power adaptor do any of the LEDs light, up? Does anything happen? Also try removing the battery, plugging in the A/C adaptor and try powering up.
If this doesn?t work please supply answers to the above questions plus any other pertinent information you may have. As always please don?t forget to rate the posting but please wait till after we?ve finished.