Download IERegFix.bat and save this to your desktop:http://download.mcafee.com/products/licensed/cust_support_patches/IERegFix.bat
Double-click the IERegFix.bat on your desktop.
Once launched, you will be presented with Press any key to continue. To execute, press any key on your keyboard.
Note: This may take several minutes to complete.
When it is finished, you will see Action complete. Press any key to close. Please press any key on your keyboard to close the IERegFix.bat.
Try to boot the computer in the safe mode with networking (while rebooting/restarting the computer tap the F8 key-In windows advance menu select safe mode with networking ).