If the hard drive is actually shot you're pretty much out of luck. If the OS is hosed (simply won't boot) and you just want to recover your files before reinstalling the OS, you can boot from a live CD, like Slax for example, and save your files to a thumb drive. Booting from a live CD would also confirm whether the hard drive is actually bad or the OS is the problem.
i am a student of diploma in electronics and telecomm
can anyone suggest me projects related to the below domains:-
electrical and electronics