is there a possibility that for example your brother or whatever is at home only at the morning?
Same IPs can be conflicting. So try to manually assign a new IP to your laptop (be sure that its not used by any other device.
Cant your laptop see the wireless network?
Can it see it but cant connect?
can you connect but are "blocked" from accessing the internet?
Have you tried whether EVERYTHING is not working or just browsers etc? (sometimes browsers dont work but e.g skype still does etc)








