All my wireless devices used to be able to connect to my Wifi network.
However my ISP comcast messed up and accidentally disconnected my network. After they restored the service, I found my Samsung Galaxy S4 phone and my XPS 8900 desktop computer can't connect to my WIFI network, all other wireless devices, including 3 iPads, 1 iPhone 6, 1 iMac and 1 Android tablet, Nexus One, were not affected and working as normal.
I have tried to restart my computer and Samsung phone and it didn't work.
My wireless router is Linksys AC1900 and my modem is Arris SB6141.
Can anyone please advise?