if closing with the normal "end task" doesn't work you can go to the next tab over, "processes", and find iexplorer.exe. Make sure that you select the one with the i in front of it or you'll close out windows explorer and that's annoying. Then click "end process" that will close out ie. You might try reinstalling your ie. That might solve the problem. Also you could get mozilla firefox and see if the same thing happens. (if you can't stay online long enough to get firefox get it on another computer and transfer the install file using a jump drive). That's all i can tell you without being able to have it in front of me. Sorry if this doesn't help, hope it does.