Battery will not charge

The three likeliest candidates are battery, A/C adaptor and laptop power socket. Battery ? Batteries typically last between 1.5 to 4 years, depending on design and use. They are not safely repairable by users or most computer shops despite what you may read. If you remove the battery from the laptop and can run just off the A/C adaptor then the battery is probably the cause. The next test would be to use the battery in another laptop to see if the same problem occurs there. If it does then the battery is defective and needs to be replaced. If the battery does work then it?s likely the charging circuitry in the laptop itself is defective. A/C adaptor - Even though the green LED on the adaptor is on it can still be the cause of your problem. Inspect the cord, especially the jack that plugs into the laptop. The jack typically takes a lot of abuse and it?s common for the cord to be damaged at the base of the laptop jack itself. Often the damage isn?t visible; however, wiggling the wire at the base of the jack can cause the laptop charging LED to come on and off. The only way to truly test the adaptor is to measure the voltage coming out of the jack under a load. The last part is very important; simply measuring the voltage with a meter does not accurately test the adaptor. An easier alternative if you have the option is plugging a working adaptor into your laptop. Laptop power socket - Most times when the power socket in the laptop goes it?s due to a broken solder joint or a broken socket. Inserting the A/C adaptor jack in the socket and wiggling it back and forth can often cause the charging LED on the laptop to turn on and off. If that happens then the socket or the board it connects to needs to be replaced. That requires a major disassembly and is usually beyond the typical user. Let us know if you have any more questions and please don?t forget to rate this posting.