Hi, I have my wife Intel MacBook connected to the internet with an Ethernet cable. Then the Internet is being shared wirelessly from the MacBook to my Intel iMac. It worked perfectly for a few month, but today, my iMac can only receive the signal. Being on the Internet is not working. I restarted router and both computers but still nothing. I also resetted the PMU of my iMac but nothing. What can I do ? My iPhone connects fine and the MacBook as well. Please help me, Thanks.