Wiping a HDD without re-installing windows?

[LiamC]

Is the above possible?

Got a friend who is selling her laptop. She wants me to delete all her data but leave Windows installed. Only problem is that she doesn't have the Windows disk.

Is it possible to Format that hard drive but leave the OS on it?


Thanks

 

[LiamC]

No idea. She's bringing the laptop down later so I'll check then