recovering harddisk from virus without formatting?

I heard from some of my friends that the hard disk got infected from the virus,can be cured without formating the drive.but they didn't told me the way to do it.Is it really possible to do so??If it is really possible how we can do it???

 

S. Its possible. first let me know wat type of virus u re affected with? If its boot sector virus, u need an advance recovery software. If its any other u can do with ease.

 

thanks for your quick response.
suppose if it's any virus other than boot sector virus,then how can we remove it using registry..can u telll me in detail?

 

U just install a good antivirus and run a scan. that will get rid of almost all viruses. U can also remove it from registry, but it won't go out of the hard disk. It just stops executing itself at the system startup.
to deleted the startup entry from registry

Code:

HKLM\software\microsoft\windows\currentversion\run
HKCU\software\microsoft\windows\currentversion\run
HKCU\software\microsoft\windows\currentversion\runonce

or else u can delete that by opening msconfig.

So, obviously the easiest way is to instal an antivirus.