PC smartoes of the 'charz, I summon you to give answer to my problem.

[IsawYoshi]

JazzB1987 said:

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)

When I use the PC in the morning there's no one else at home.

Yes it can see the network, but it cannot connect. It just tells me that it can not find a stabile connection. I've actually only tested if the internet only works with spotify and google chrome, but I assumed because it's not the browser having troubles, but the Pc connecting, I should have the same problems everywhere else.