I have Ubuntu fully installed on my laptop with no installation media in or attached. Everytime is boot my laptop it asks me to remove installation media and press enter to restart, like what happens after installation. I have never had this issue before with this laptop or any of my systems. Pleas help thankyou in advance.
Have you got any CD/DVD in your drive?
Do you have any USB Flash drive plugged to your computer?
If it still does not boot, check your BIOS boot order and ensure that your Hard Disk is not on the top.