There are times when internet browsers start to run sluggish and do not perform as they should do, it could be due to Malware, a rogue or incompatible browser add-on or that it is just slow. So the below FixIt tool can allow you to automatically try and fix IE or also on the page are the manual instructions, personally I would always start with the automatic option.
“Is browsing always slow in Internet Explorer? Does it frequently stop responding (hang), or stop working (crash)? Do you receive error messages that indicate that Internet Explorer has “encountered a problem and needs to close”? Or that a Visual C++ “runtime error” has occurred in Iexplore.exe?
If so, then you might want to try resetting Internet Explorer. When you reset Internet Explorer settings, all add-ons and customizations are deleted, and you basically start with a fresh version of Internet Explorer. This article helps you reset Internet Explorer.”
Run the FixIt tool from HERE