When i sign up it says a password field and ive been trying to find it but what is it

You can change your Yahoo account password by following the steps below:
1. Go to https://login.yahoo.com/config/login_verify2 and sign-in to your account.
2. Under "Sign-In and Security", click Change your password.
3. Type your new password in the "New password" field, then type it again in the "Confirm new password" field.
4. Now, click Continue. You will receive a message confirming the password change.
5. Click Continue to complete the procedure.

The following link can be useful:
https://help.yahoo.com/kb/password-sln2035.html

GuruAid.com

You can change your Yahoo mail password by following the steps below:
1.Click on https://login.yahoo.com/
2.Enter your username and password appropriately and click "Sign In"
3.Under "Sign-in and Security", click "Change your password"
4.Type your new password in the "New password" field, then type it again in the "Confirm new password" field.
5.Click "Continue"
6.You'll get a message confirming that you successfully changed your password.
7.Again click "Continue"

Now your password is successfully changed. Henceforth, you will need to login with your new password.
This link can be helpful:
https://in.help.yahoo.com/kb/password-sln2035.html

Hope this will help you.

GuruAid.com

On the PayPal sign-in screen, click the "forgot?" button inside the password field.

For Facebook, click the "Forgot your password?" link on the Facebook sign-in page just below the password field.

For your email, which email service? Is there a "Forgot your password?" or "Can't access your account?" link on the sign-in page?

Visit the Google homepage.
Click the "Sign in" link in the top-right corner of the page.
Type your email address that you use to sign in to your Google account in the "Email" field.
Type your password in the "Password" field.
Hit the "Sign in" button.

http://www.google.com/url?sa=D&q=http://www.google.com/accounts/&usg=AFQjCNHnZt01zbyVWAKKKBmRjoeWTt_60Q

On the Facebook sign-in page click the "Forgot your password?" link just below the password field.

You mean the windows login? To retain the password you should use a Windows password recovery tool. One that I have used is ophcrack , it's excellent and free. Just try googling for it.

try the suggestions given at this site
http://support.quickbooks.intuit.com/support/Articles/SLN41478

On the sign-in page, directly under the Password field, there is a check box titled "keep me signed in" - select this option and log in. This will allow you to remain logged in until the cache is cleared from your Internet history.

u must b using wrong email id and password..check with othr id