The Internal Power Supply Toshiba T1910 Does Not Start

1. Check the power supply: Make sure that the laptop is properly plugged in and that the outlet is functioning.
2. Check the power cord: Make sure that the power cord is properly connected to the laptop and that there are no loose connections or damaged components.
3. Check the battery: Make sure that the battery is properly connected and that it has a charge.
4. Check the power button: Make sure that the power button is functioning properly and that there are no loose connections or damaged components.
5. Check the manual: Consult your laptop's manual for troubleshooting steps specific to your model.
6. Check the power supply unit (PSU): Make sure that the internal power supply unit is properly functioning and that there are no loose connections or damaged components.
7. Check the BIOS: Make sure that the BIOS is updated to the latest version.
8. Check the charging circuit: Make sure that the charging circuit is properly functioning and that there are no loose connections or damaged components.

If none of the above steps resolves the issue, it may be a hardware problem and you should contact the manufacturer or an authorized service center for further assistance. It's also possible that the laptop's internal power supply needs to be replaced, which is a complex process that would require professional knowledge and tools.

It's not recommended to try to repair it by yourself if you don't have enough knowledge about electrical circuits, as it could be dangerous and could cause further damage to the device.