Website Not Displaying Properly In IE, Windows 7

My first Muse created website is at http://gordonsportfolio.businesscatalyst.com where it displays as designed in Firefox, Safari, iPad, and iPhone. Using a friend's Windows 7 laptop, however, it does not display as designed and, in fact, is missing all the navigation buttons and the layers are not where they should be. Is this to be expected? Is this normal for Internet Explorer?
Gordon Modin
[email protected]
http://gordonsportfolio.businesscatalyst.com

Thank you so much for replying on a Saturday Zak. Sorry not to include a screen capture, but I don't know the first thing about PCs, only Mac. On Macs this site looks great, but I'm using it to look for work and afraid everybody on a PC will think I'm an idiot for not fixing this before applying. Will use your suggestion and see if it doesn't help (pretty sure it will).
Thank you Zak!!
Gordon

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    *https://support.mozilla.org/kb/Safe+Mode
    *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

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