Quote: Originally Posted by bhanujolly
machine is licensed for windows 7 home basic OA india.
and no original OS came with my machine...
If your machine is licensed for Windows 7 Home Basic then is was shipped from the factory with Windows 7 Home Basic installed.
What happened after that is anyone's guess.
You should acquire a set of Recovery disks from teh manufacturer, and reformat/reinstall using those.
There is a slight chance that the Recovery partition is is extant - check your manual to see how to use it. If it works, great - if not, then you've lost nothing.