Itunes Wont Start At All No Error Messages Nothing HELP ME!!!!!!!!!!!!!!!

Question

My Itunes Wont Work At All No Error Message Comes Up NOTHING ive Uninstalled , Deleted the Files in c Drive and Re Installed it Over and Over Again Quicktime Works Fine But When i Open Quicktime My Itunes is on there :S its very Confusing But i still cant Sync music Onto my Ipod or Buy Any Music Please Help Me!!!!!!!

Answer 1

Does iTunes.exe persist in the task manager or disappear again quickly. This can be a clue to the cause of the problem.
If iTunes persists this points to either firewall blocking or a damaged configuration file.
Try briefly turning off your firewall to see if iTunes will launch. Otherwise the link I will give at the end tells you how to delete the configuration file.
If iTunes doesn't appear or appears briefly and then disappears this may be a digital signing issue, also dealt with in the link.
It is a good idea to scan your PC for viruses and spyware, as malware can cause problems.
Apple article on troubelshooting launch problems:
XP version
http://docs.info.apple.com/article.html?artnum=302856
Vista version
http://docs.info.apple.com/article.html?artnum=305491
If the things I suggested above don't wiork, try working through the whole article.
All this is on the assumption that your Quicktime is working normally. I am a bit worried that you have been installing and uninstalling different versions, it just complicates the issue.