Hello, I have a Lenovo g50-45 laptop (available for purchase). It runs on battery (it was 47 percent). However, when I plug in a 20v 3.25A power adapter, it doesn't charge it. Without a battery, it does not start. In the system, it shows that the power supply is charging it, but it only works on the battery and its indicator drops all the time. Unfortunately, I do not have a second power supply. The meter shows 20 volts. What could be damaged and whether it would be worth repairing. Thanks for your understanding and any answers.
Model 50053 power supply 65W manufacturer nTec (Qoltec).
Model 50053 power supply 65W manufacturer nTec (Qoltec).