Hi vishnum
If you mean a H. P. laptop?
Go to start menu> all programs see if you have
P.C. Help and Tools. Click on Recovery Disc Creation. Follow the
instructions. You only get to make one set, so make it a good one.
There should also be a Recovery Partition D: to use at boot up.
Don't do anything to that, as you may need it
sometime in the future!
Hope this helps.