my laptop is new i scan it by Emsisoft and Bitdefender,It sounds like you might have something nasty on your PC. I would try Firefox or some other browser to see if it works fine. If it crashes also you either have a virus/corrupt files on your PC. IE 11 even though I use it is not the best IMO.
Did you try to go to: Control Panel\All Control Panel Items\Troubleshooting\Programs and select Internet Explorer Performance, and then follow the instructions in the Troubleshooter.i change my laptop OS last week.
i installed Windows 8.1 and IE11 but when i open IE11 it will not open and closed automatically!!
what can i do
yes i reset it and do Troubleshooter its not work!Did you try to go to: Control Panel\All Control Panel Items\Troubleshooting\Programs and select Internet Explorer Performance, and then follow the instructions in the Troubleshooter.
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Also, you can try to run Repair Internet Explorer tool from Tweaking.com: http://www.tweaking.com/content/page/repair_internet_explorer.html
Did you try to reset Internet Explorer to its default settings?
wow its work.!While finding a solution for your IE browser issue and you need to check your university website urgently, then you may try switching the user agent of your favourite browser to IE's one - http://www.howtogeek.com/113439/how-to-change-your-browsers-user-agent-without-installing-any-extensions/
Hope this helps!
More about User Agents: http://en.wikipedia.org/wiki/User_agent