RE: How to Login Windows 8 after Forgot Admin Password?
Clear Windows 8 password with free tool - Offline NT Password & Edit Registry:
1. Download the tool zip file from the site: pogostick.net/.../.
2. Unzip the file, and insert a USB to create a bootable disk following the instructions on the download page.
3. Boot your Dell computer from the USB drive.
4. When go to the black and white command window, follow the on-screen instructions to clear your Windows 8 password. Mostly, you just need to select the default one and press Enter directly to go.
Good luck with you!