I've got the same problem going on with my computer so far none of the solutions have worked for me so far. I'm also using windows defender (I dont have talktalk) and I've deactivated my firewall to download and reinstall java 7u5 for 64bit (as per my system, 64 windows 7). The technic launcher.exe from the download site on technic.net runs and downloads the launcher &crates the .technicpack folder in appdata. I try running the newly created launcher and it creates the launcher folder the temp folder the log folder and the launcher.txt file and then freezes at the logo like Deadcow says. I cant supply much help but maybe with two people with the same problem on different systems we can see what the common variables are.
