When I start my laptop, the error shows as:
'NO bootable Devices' press F1 to retry,F2 for setup ,and F3 for Scan.
When I put in my Windows 7 CD, the same problem happens. My laptop can't read the disk either.
closed as off topic by izx, Tom Brossman, Florian Diesch, Mitch♦, Ringtail Sep 10 '12 at 4:35
Questions on Ask Ubuntu are expected to relate to Ubuntu within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.
Probably your laptop lost its BIOS setup. Enter BIOs (F2 as it suggests on boot) and reconfigure the disks (and check the other settings).