I purchased a new PC shortly before Windows 7 was launched. I was able to purchase a disk from the PC manufacturer allowing me to upgrade when Windows 7 was released. I have an IE icon in the task bar but wheh I click it, the hour glass appears fro a few seconds and vanishes. I have scoured for information including open IE with no add ons, creating a new icon etc but nothing works and it will not open. Any ideas please.