Here are a few things you can try:
1. Make sure your keyboard's Caps Lock is off, because passwords are case-sensitive. Then, try logging-in again.
2. If you are already a member of DEWALT.com click on the login tab at the top of the page. There will be a box that pops up and in that box it will show "forgot password" and you will need to click on that if you forgot your password. Follow the prompts to recover your password.