Itunes not opening

The first thing I'd suggest is to get a good antispyware checker and give it a go at your system. Some recent spyware has been reported by other users to shut down iTunes or prevents it from launching. From user reports, Ewido seems to be the best at catching it. You can download a free version of Ewido here.

If that doesn't cure the problem, try deleting the iTunes preference files:

C:\Documents and Settings\<username>\Application Data\Apple Computer\iTunes\iTunes.pref

and

C:\Documents and Settings\<username>\Local Data\Application Data\Apple Computer\iTunes\iTunes.pref

You might have to turn on "show hidden files" to find them. (Right click "my computer", select open, select Tools menu -> Folder Options. Select View tab, "show hidden files" radio button is in the center scrolling panel.) Delete them. This will force iTunes to run the setup assistant the next time you run it and you'll have to go back and set any preferences you've changed from the default.

Hope this helps.

I am having the exact same problem, so this isn't a fluke. I tried reinstalling too.

I previously downloaded the newer iTunes it said it could not read my library, but acted like it was trying to open.

You may have a corrupted library file and may need to rebuild it. Look here for instructions:

How to recreate your iTunes Library

Hope this helps.

Make sure that you have the latest virus definition files for your anti-virus software. Let's also try the "turn off startup items" trick.

Go to Start menu -> Run. Type in "msconfig". Go to the Startup tab in this dialog and "disable all" startup items. Reboot. And see if iTunes will run now. To restore to your previous configuration, go back to the msconfig window and "enable all" startup items and reboot.

There's a piece of spyware that installs itself with a different name on every system as a way to hide itself that has been causing this problem with iTunes. And because it has a different name on each system, I can't just tell you look for "blaaah".

Does the Quicktime Player run? It was installed with iTunes and should be in your Start menu -> Programs menu.