Wireless Does Not Work On Boot

Hi,

since one week, I have to systematically do the following things to be connected :

1/ disconnect and reconnect the router, for 10 seconds
2/ At this time i just can connect to the router and not internet, but i have to restart it in its interface (192.168.1.1 > Tooles > restart). Internet works at this moment.
3/ I have to activate the key VERRNUM which is desactivated
4/ I have to quit and restart gkrellm, if not, i can't see the sensors

I already had this problem, but it was less frequent... Now it is everytime I start the computer
How is it possible to solve that ?

Thanks