No desktop icons. Hi. I have an Acer Aspire 5720-4126. I just purchased it new about 2 weeks ago.

Question

Hi. I have an Acer Aspire 5720-4126. I just purchased it new about 2 weeks ago. In the last three days, every time I open internet explorer, all of my desktop icons, including my start menu disappear. i can continue to use intner explorer but nothing else. Can you advise me? I would appreciate it.