Suggestions only...........
1. Make sure your machine is clear.
If you have Malwarebyes installed, please run a full scan.
If you don't have it, and if your Internet Explorer manages to stay on long enough, download Malwarebytes FREE edition, then go to Safe Mode and run it.
Malwarebytes download :
http://www.malwarebytes.org/products/malwarebytes_free/
After that, try using your IE and see if it works. If problem persists, go to suggestion #2.
2. Reset your Internet Explorer.
Open IE > at the top, click Tools > click Internet Options > click Advanced tab at the top > near the bottom > click Reset > follow the prompts ( I believe there is a "Yes" and a " Delete" you need to click.)
Try using IE again.