Windows 10: new sign in email

I need to take away my sign in email and replace with new one. I can not get rid of the email.

:)

 

Email contacts missing

1. If you open Mail app and click the + sign for New mail > type first couple of letters of a contact name > will a list of suggested names appear ?

2. Go to All apps > scroll to P > click People. Is the contact list there ?

 

Incomplete email address, so I can not sign into laptop.

Since you already went into your account under the correct email and changed the password, we'd like to know more for us to research further. Kindly answer the following questions:

• Is this the only administrator account on your Windows 10?
• Have you checked if you can sign in offline?

Meanwhile, we suggest that you
start your computer in safe mode and see if you can sign in with the new password. On the article, kindly follow the steps on the section that says
From the sign-in screen.

Kindly get back to us for further assistance.

 

Cannot sign in microsoft account.

My device: Lumia 520. GDR2.
I cannot sign in my Microsoft account on my device. It didnt say any error but Microsoft account is not listed in Email and account list. When I click add button, it will show microsoft account option but after press sign in, it is still not shown in email
and account. Another problem is i cannot delete facebook account. Error code: 0x83cf1202. I have tried as suggested here: http://support.microsoft.com/kb/2475837/en-us#step0x83cf1202 but as my Microsoft account is not shown, I cannot do step 6.

Any suggestion?