I've been having problems with my launcher and client. Before when I opened my minecraft client I could join servers and everything but some servers I would have 9999999x more lag than other servers, and it would be a random thing even if there weren't many parts near spawn. It was constantly the same servers and I would spawn and fall into the void and just sit there. To attempt fixing that, I deleted and re-installed minecraft. Now that I've reinstalled it and updated to 1.6.2 any time I click "Play" Nothing happens. It shows a little loading symbol but nothing happens. I'm using Windows 7 with a 2.2ghz processor and 4 GB ram. Can anyone help me with this?
It's not anything to do with my internet, When I open the minecraft launcher I already have my name and everything in it, I click play and the client does not start up. I've tried clearing my versions and redownloading, I've tried uninstalling minecraft completely, but nothing has helped.
Edit: No versions are working.