Laptop power on without charge what's going on?

The laptop does not charge for three main reasons.

First, let's troubleshoot the software problem first. In general, many computer brands, such as Dell, Lenovo, Sony, and so on, will be equipped with power management software for their laptops. If some kind of "battery protection mode" is enabled, the power management software can prolong battery life by detecting that the user uses AC power to prohibit battery charge and discharge. So, if you find your laptop is not charging, you can go to the relevant power management software, turn off the battery protection mode or check out the Forbidden charging option, if the hardware is no problem, the battery will be able to charge.

The second reason is the battery's own hardware failure. In general, we can use the restart computer, reseat the battery to judge, if the battery is still unable to charge, may wish to install some hardware detection applications, to obtain the approximate battery loss reference information. If it is determined that the battery hardware failure, do not open or try to repair, there is a certain risk, do not blindly believe that some of the online so-called tips, may cause battery fire or even explosion.

Here to provide you with a more effective method of battery repair. When the laptop is booted into the BIOS, the "Start Battery calibration" option, "starting battery repair," is usually found in the power project. Generally, this will first remind the user to connect the power adapter for full charge and then display text prompting the user to disconnect the AC power, and the system will continue to discharge the notebook until the battery is completely depleted. Since then, the notebook will be automatically shutdown, we can connect the power adapter to charge, but do not boot, the charging indicator is off after the whole process is completed.

It should be noted that the BIOS battery repair process may take 5 hours, so be sure to do it when you do not need to use the notebook. If the move is still not improving the battery state, then you can only say that the battery has been beyond resurrection, you could either repair or buy a new original battery.

The last problem that may cause the laptop to be unable to charge is the power adapter failure, but it is rare and there is no proper way to detect it, and can only be sent to the depot for testing.

All in all, people are dealing with the battery problem or need to be cautious. Although lithium batteries are relatively stable, but there are also fire, explosion cases, do not disassemble or repair themselves, may lead to safety problems.