No disk in drive
You can get this message if there is a USB device plugged into the system. Try disconnecting the USB device and see if that has any effect.
If the USB is causing the issue, enter the BIOS and change USB Emulation to No Boot. Some systems may not have the option to change the Emulation to No Boot. You may have to change the boot order instead. Consult the manual of your system for more details.