Update Windows 8.1 to the latest version.
Update Windows 8.1 to the latest version.
You're looking for a fresh setup with custom drivers, avoiding the original HP disk. It's okay if you've lost it or can't locate it—Microsoft offers a way to reinstall Windows without needing the old drive. Since you're upgrading to Intel and moving from AMD, this clean installation will give you full control over driver selection.
Consider an alternative method without using CD. Press refresh in the search bar and choose "Refresh your PC without affecting your files". Also, remember to delete all files and restart Windows completely.