As in the past i have posted a lot on registry editing, to make things work and some hacks, it is hence very necessary to backup your registry, so as if anything wrong happens then at least you are in a position to restore the previous settings. Here is a way to backup your registry.

1. Open Regedit, and click File in the Menu bar.
2. Click Export and save this file in a safe place.
3. You can now edit your registry safely. If you feel like you have made some unknown changes, you need to Import this file back.