I've got a Compaq Presario CQ61 with Windows 7 Home Premium installed on it.
Now, lately my computer's been causing me a lot of troubles, up to the point I'd like to set it back
to factory settings. Now, the computer's a couple of years old, and I do not have any disk of Windows,
nor the registration codes.
Do I need those to put the computer back to factory settings, or does my OS remain as it is today?