Mac battery problem - won't respond

Sorry t hear of your troubles but any site that says to Disconnect the battery to change out a hard dirve is completely mistaken. It seems, to me at least, that whenever the battery is disconnected it causes more problems then can be caused by just leaving it alone. I have switched out drives many times on my 15' Late 2011 MBP, from original to SSD back to the original to a Seagate XT back to original back to SSD and back to the Seagate, and never diconnected the battery and my system seems to be running OK.

I think at this point your only option is to take it to Apple but more then likely they will say it is a Logic Board failure and want to replace it, at a very high price.

You can try to leave it connected to the AC charger overnight and see if that helps. You can also try holding down the power button for 10+ second and then let it sit for a few more then Pressing the power button again and see if it turns on.

Good Luck & Best Wishes.

Will your MBP start with the power adapter attached?

Ciao.

If the charger is good and getting power the MagSafe connector LED should light up even with a bad battery. Some MacBook Pro models will operate on line power without a battery in the circuit, some have to see the battery in the circuit even if the battery has failed.

Have you tried the power adaptor on different outlets to make sure it is getting power? If so, you cold also have a failed power adaptor.

Visiting an Apple store genius bar to have the techs sort out the issues, MBP and charger, would not be a bad idea.

First, Marcel, I don't see the year/model of your MBP unless I am missing it. Since you mentioned disconnecting the battery I am assuming this is a model with an internal battery and not one with the battery as part of a door in the base of the MBP.

Second, Apple only sells certain batteries to consumers, the ones that are an integral part of the removable battery door in the base of the MBP. The others have to be installed by Apple techs or purchased from third-party suppliers. Which can be very good, but still they are not from Apple.

Third, Apple stores, in the US anyway, do not charge for diagnosis but do charge for repairs for out of warranty equipment. They will not do repairs without your permission, so if you take it in they should diagnose and then discuss the findings with you and provide an estimate of the costs of repair. So you decide before spending money.

I am out of numbers so will stop.

Ah, the Early 2011 has an internal battery so if it were me, I would take it to the Apple techs and get their diagnosis so I at least knew what I was dealing with at this point. After that it is your option as to what you want to do about the MBP.