itunes will not open

I have tried the first set and It does not give me an option to start in safe mode.

http://support.apple.com/kb/ts1717

I created a new account on my pc and itunes started.

I tried the steps for a user specific troubleshooting, it did not help still would not start.

I created new library and it still would not start.

I tried to rebuild and still it will not start.

moved the library file to desktop and tried to start itunes, still not opening.

Itunes was working fine yesterday. I did update, I also updated icloud (it is also not opening).

I have uninstalled itunes, I also tried to uninstall icloud. I can not open it to sign out and I do not want to loose any data.

In task manager itunes and icloud show up in processes but on in the applications tab.

I do not know what else to try.