Hi T-D,
This sounds like a BIOS setting .............it is looking to boot from a floppy drive
Switch on and constantly tap F2 about once per second ..........or wait untill you get the "Press F1 / F2 ..." and press F2
This should take you to the BIOS settings
You are looking for the Boot Order ( Boot Sequence or similar )
Move around with the arrow keys.
You should see a list of devices.
The CDROM should be first in the order and the Hard Disk Drive second.
If your Floppy Drive is first .....move it down the order.
It will say on screen how to do this but is normally with the + / - keys
Once you have the order right Save and Exit ( usually F10 )