[Client] lolclient.exe crashes 10 seconds after logging in.

Hey everyone.

I initially posted this in Help and Support but thought I'd give it a try in here aswell.

I'm hoping someone can help me out here. After the last patch, I've been unable to actually start any games in League of Legends. It patched just fine, and I can login just fine. However, when I get to the home screen, the client crashes. Every time. It takes just around 10 seconds. Every time. I get "lolclient.exe has stopped working", and no bugsplat.

This is a local problem. I can login fine on another computer, but anyone who tries to login on mine gets the same problem. However, I can't for the life of me figure out what's going on. I've reinstalled twice. Updated drivers, updated adobe air, disabled the windows firewall, read through this forum and the knowledgebase but nothing seems applicable. I haven't installed anything new since before the patch.

My thoughts are, that something in the new patch interferes with some program or driver or something that's on this computer, but I don't know what it could be.

Please, any suggestions would be appreciated. I can provide any logs or whatnot that are needed.

Thank you in advance