How did you delete the password?
You should have entered "nothing" as the new password. If you entered anything at all, even spaces you may have actually changed the password rather than deleting it as you wanted to.
There is a chance(probably slim) that you could get into safe mode and correct the password issue. Press F8 a couple of times shortly after exiting the bios password screen. Select "Safe Mode". Depending on the setup, you may be able to get back into Windows.