Take into consideration that if it's not browser's problem, then there's 99% possibility that problem has started from an add-on! Follow the steps below:
Click on Start
Go to All Programs
Find folder named Accessories
Click on folder named System Tools
Open Internet Explorer (without add-ons)
If there's not the bar with the options on the top side of the screen press Alt
Click on Tools
Manage add-ons
Toolbars and Extensions
Turn off the ones you may find more "guilty"
I found that this problem most times had to do with Adobe or Antivirus add-ons. Also, take a look at accelerators and disable (or remove) the same things.
