Empty Champion List

I was having ping issues, so I plugged my Ethernet cable into my laptop. I restarted the client and went into lobby. Found a match, and then there was no champion list. I could click the arrow at the bottom up and down, but no champion list would appear. Typed in champ names, nothing would come up. Couldn't declare a champ, or ban a champ. Now I have a cue ban. The struggle.