hello, I have recently reset my computer to factory by a professional. I just tried to install itunes but it did not work. the itunes tech support person told me that i am suppose to have windows installer package in control panel/ programs but it's not there. what do i do? i have tried located a download option but did not find that anywhere. I have also found lots of "windows installer error fixes" but i can't fix something i don't have installed. thank you so much for your help !!