See the Article “Why can’t I start my Office 2013 application at:
http://office.microsoft.com/en-us/support/why-cant-i-start-my-office-2013-application-HA104011864.aspx
If that does not help, then you might remove all traces of the Office installation by downloading the fixit from the following article:
http://support.microsoft.com/kb/2739501
saving it to your computer and then running it.
Then reinstall Office by logging into www.office.com/myaccountwith your registered email address and click Install Office.
I've tried all of that 10 times now and still all I get is "Something went wrong" no error number, nothing useful.
The uninstall "FixIt" doesn't fix anything but tells me I've got Click-To_Run installed, so why doesn't that appear in Control panel| Programs & Features?
Office2013 appears to me to be flaky and unreliable, as several of my colleagues have had major problems too. Please Make Office2010 available again - that just works!!!