Common symptoms
- No charging light when the adapter is connected.
- The fan does not spin and the screen stays black.
- The laptop briefly reacts and then turns off again.
Possible causes
- Faulty charger or DC input.
- Battery or charging circuit fault.
- Shorted component or motherboard damage.
What diagnosis checks
- Known-good charger testing and power input inspection.
- Battery and charging rail measurements.
- Mainboard short checks before any part replacement.
When repair is possible
- Many charging and power faults can be repaired after diagnosis.
- A full motherboard replacement is not assumed until simpler causes are ruled out.
What not to do
- Do not keep trying many unknown chargers.
- Do not heat the laptop or press the power button repeatedly for long periods.
- If there was liquid damage, stop powering it immediately.