Been struggling with this error for quite some time now. This error came to me out of nowhere one day when I launched Minecraft. Everything worked perfectly fine before. Basically, I can't get past the white screen console, but there was a time that I was able to. During that time, I proceeded to download 1.7.2, but all I got were errors showing that I am unable to download a certain file in the library.
This is the error that I get upon launching the launcher: http://pastebin.com/siH28hkF
DxDiag: http://pastebin.com/88xD9JLp
The only anti-virus I have installed is MSE and I've allowed Minecraft through my firewall.