I need help on my Router pls help me

Hello,
I set everything on my router but i accidentally choose dsl instead of cable internet because i have comcast cable internet so how do i changes this setting and the window showed up and the router is fine but the internet is not working on the linksys easy advisor how can i fix my internet connection and everytime it said plugg out the router power and the modem leave it 10 second and plugg the modem and wait for 1 minute plugg the router and wait 30 seconds to click next i did this a lot of time but is not working plss plsss plss help me