I have two laptops and a wireless router in my network. Laptops are connecting to internet over router and built in wireless adapters. Everything worked fine until I had to force shut down one laptop. After this it was not able to go to internet or to see router and other computer. Do you know what problem I am facing here?
It looks to me that your wireless adapter is gone bad. Just to be sure try to power off computer and router, wait for a minute then power them on. Scan for available networks with laptop and see if something comes up. If you can not find any networks then we can safely assume that you wireless network card is broken and you should buy a new one.