Wifi keeps searching and doesn't connect after waking from sleep

Hello there,

As of late, my MacBook Pro does not connect to the internet after waking from sleep. Basically, all is connected and well until I close it for the day and when I wake it up, it just keeps searching for a wifi signal. I know my wifi works because my phone connects to it without an issue.

The only way I have found to get it to connect is to restart it.

In addition to that (may be related), I cannot open system preferences to go to network connections when it's searching. System Preferences just doesn't open. Today my Quickbooks also wouldn't open.

I don't know if those are related or not? Recently I installed iDisk, would that have done it?

Thanks,
Lorne