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Let's see if we can do a reset of Internet Explorer to resolve that issue. Before doing that, though, go ahead and press CTRL + D on your keyboard to add this page to your Favorites, or click on Favorites > Add to Favorites to add this page to your Favorites that way so that you can easily return to it once you open up Internet Explorer again.
In Internet Explorer, please go to Tools > Internet Options. (If you don't see Tools, tap ALT, or hold ALT and while holding ALT, press T)Click on the Advanced tab...Click Reset, then Reset again.Click OK out of those windows once it's complete and close all Internet Explorer windows…and then open up Internet Explorer again. Let me know if you're then able to get on the Internet without it consuming too much CPU.