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
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Probably your laptop lost its BIOS setup. Enter BIOs (F2 as it suggests on boot) and reconfigure the disks (and check the other settings).