Detailed description：
Hello, I've been having a problem with my wifi for a few weeks now and I haven't been able to solve it
Sometimes I put the computer to sleep and when I come back to it after a few hours I find that the WiFi is down and I can't use the WiFi unless I restart the computer
I can see the Wi-Fi sign and I can turn it off and on but it doesn't show me which network to connect to and it says "unavailable"
