This video shows how to repair a laptop (Toshiba L655) that does not turn on, good power supply and good power jack, but it still will not turn on.

Follow the step by step troubleshooting procedure to figure what its wrong with the computer, these steps work for most laptops so by following you might find out what is wrong with yours.

You may also find items I use and recommend at the following store front in amazon, any sales made there provide a few cents for funding of future videos. https://www.amazon.com/shop/carpio01