There is No Bootable Device Toshiba Laptop. Restart the your system

Device not bootable Insert boot disk, then hit any key

If you’re having the same issue do not fret. It’s a frequent issue and you can fix the problem with a bootable devices on Toshiba laptops quickly and easily.

1.) Shut off your computer.

2.) Take out all other deviceincluding the USB drives, Bluetooth headphones and other devices.

3.) Take off from your AC adapter, your hard drive, and your battery (if the battery you have has a removable battery).

https://www.visiontechnews.com/how-to-fix-no-bootable-device-toshiba-laptop-error/