I'm running windows7.How to get my pc to remember my sign in information, user name, email, password etc?

[plutonic]

This has to do with the browser. I use Chrome so I will use that for this example. Go to Settings from the Menu icon just below the Red X that closes the browser. From there select Settings. On the bottom of that page, click on advanced settings which brings up additional settings. A few lines down you will see "Offer to save passwords I enter on the web" Make sure that that box is checked.

Edit: Also make sure the box above the one mentioned above, Enable autofill .... is checked.