I have a Dell Latitude D630 Laptop, which will only power up when the power adapter is plugged in. It will not power up on battery only. Once powered up I can unplug the adapter and it will run on the battery. The adapter works properly in charging the battery as well. The battery holds a charge for the duration I'm using it.
How can I get the laptop to turn on without the adapter plugged in when starting?
Best Answer
Make sure BIOS is the latest version.
Make sure there is no issue with the connector pins on the battery, such as bent or corroded pins, or other physical issues with the battery.
Make sure there is no corrosion on the battery pins where they connect to the motherboard. If you find corrosion, replace the motherboard.
Try draining battery completely, leave it out of the system for a day, then charge it fully.
You may need to replace the battery anyway, even though it works fine when the system is started from AC power. This laptop is rather old and if you still have the original battery that came with it, it may be starting to go out.
If this happens even with a different, known working battery, the motherboard might need to be replaced.