I found it myself and its a headache and irritating situation when you loose your geniune and activated windows provided by the manufacturer :x
If you have the recovery partition untouched Recovery ( D: ) on your hp laptop, do the following steps to bring it back to its factory...
It gives following error :(
Windows Boot Manager
Windows failed to start. A recent hardware or software change might be the cause.
To fix the problem:
1. Insert your Windows installation disc and restart your computer.
2. Choose your language settings, and then click "Next".
I am facing a serious problem from Last Night, Actually I was trying to Install Windows Server 2008 as a secondary OS on my HP Pavilion dv6 laptop.
It had made another partition to do so, but mistakenly I overwrite the new window on the existing Windows 7 from the manufacturer.
Now All my...