Your problem mainly depends on what isn't working. If the Notebook is turning on, but it just isn't getting past the POST, then you likely have a BIOS problem. If it isn't turning on at all, it's a hardware problem. It could be that it just overheated and needs time to cool off, it could be a dead battery, you may have a loose connection in the power cable, or a critical piece of hardware has failed and your computer needs to be serviced by a technician.
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Hi there,
Your problem mainly depends on what isn't working. If the Notebook is turning on, but it just isn't getting past the POST, then you likely have a BIOS problem. If it isn't turning on at all, it's a hardware problem. It could be that it just overheated and needs time to cool off, it could be a dead battery, you may have a loose connection in the power cable, or a critical piece of hardware has failed and your computer needs to be serviced by a technician.
Hope some of these steps help! :)