I want to purchase some music on ITUNES, however I cannot open the ITUNES store in my ITUNES on my computer.

I want to purchase some music on ITUNES, however I cannot open the ITUNES store in my ITUNES on my computer.

When I click on the store in ITUNES the loading mechanism sticks half way across, then after a little while the ITUNES store screen goes blank, meaning I cannot access the store, please advise as to a remedy for this.

I have reloaded ITUNES twice on my PC but this has not helped.

Thanks for help