Welcome to cdfreaks.
Is your drive properly recognized in BIOS and/or devicemanager?
(Depending of the brand of your laptop, you can boot into BIOS directly at start-up of compu with F2, F10, Del, aso. You'll have to try it out. Don't change anything there atm).
Try also to boot from your windows (or Linux distro) installation cd.
(If drive doesn't start loading check in BIOS that your drive is in boot chain, under "boot option/devices".)
BTW, registry tools should be used with precaution and only by experienced users.