Do note my Laptop is a 5 year old Dell.
Thanks in advance.
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Posted 17 January 2014 - 03:41 PM
Posted 17 January 2014 - 07:49 PM
First of all, welcome to BC !
From what you have said, you have cured all your problems - except you haven't !
First of all, get hold of a multi-meter, if you haven't got one, beg, borrow or steal one. Then check the output voltage at the socket that goes into the laptop. The rated voltage is normally printed on the power supply, and, since you have to disconnect it from the laptop to test the voltage you will be 'off-load'. This means that, if the rated voltage is 18V output (as an example) then you should expect to measure about 19 or 19.5 V at the laptop plug. If it barely reaches 18V off-load the power supply is faulty.
Assuming it isn't - ie you are getting about the 19V mentioned above - plug it into the laptop, turn the laptop on and leave it running for about an hour. Then check for any hotspots along the cable and at the plug where it enters the computer. There shouldn't be any. If there are any hotspots, this indicates a fault which is consuming volts due to high resistance and reducing the voltage reaching the battery. If there are any hotspots, the cable is faulty. Do this with the cable plugged in and the computer on.
Then disconnect from the mains, turn the computer off, take the battery out and see if you are getting the rated battery voltage from the battery. This is also printed on the battery. Whatever voltage you get, leave the battery for a couple of hours, or overnight, and check it again. You should get an almost identical reading the second time. If it is noticeably more than 0.1 V, the battery isn't holding charge.
The only other area that might have a problem is that there is some circuitry inside the laptop between the charging socket. However if it turns out to be this, this falls into the category 'unfixable'.
I would test the mains charger unit first, and if that is producing the correct volts, suspect the battery. Batteries can fail very young, and faulty batteries exist.
Sorry I can't offer a more specific solution.
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