No bootable device found or detected message appears on the screen when laptop starts.
1. Hard drive disconnected from motherboard.
2. Hard drive is blank.
3. Failed hard drive.
4. Motherboard failure.
If no bootable device error message appears on startup, it means the laptop cannot see the hard drive, the hard drive is blank, the hard drive failed or the motherboard has a failed controller.
1. Access the hard drive and make sure it’s properly connected to the motherboard. Try reconnecting the hard drive. Remove the hard drive from the laptop and install back in. Test the laptop.
2. You can get this message after the hard drive replacement. You can see the error message because the hard drive is blank and the laptop cannot boot from this drive. Install the operating system from the laptop recovery disc or installation CD.
3. It’s possible you getting this error message because the hard drive failed.
Listen for the hard drive noises when the laptop starts. If the laptop doesn’t spin, most likely you have a failed hard drive.
Also, you can remove the hard drive from the laptop and test it in an external USB enclosure. Connect the enclosure to another working computer and try to access the drive.
4. If you can access the hard drive and it works fine when connected to another computer (via USB enclosure or hard drive adapter) but doesn’t work when installed into the laptop, most likely this is laptop motherboard related failure. Apparently the motherboard has a failed hard drive controller. In this case the motherboard has to be replaced.