Try to provide more information on the problem instead of just writing "its not working plz help"
1. Your drivers are not correct/working correctly - Solution: reinstall wireless drivers
2. Your router is not working (confirmed by failing to connect with another device) - Solution: change router
3. Your network adapter has failed (confirmed by not getting any search results even after clean driver installation and working wireless router nearby) - Solution: send laptop for repair4. Your computer is rejected by your router (mostly IP/MAC filter turned on, wrong IP configuration on your laptop, entered wrong password, need to press small button on your router to accept the connection) - Solution: This one is pretty self exlaned. Depending on what blocks you you can fix it.