This problem doesnt seem to have a definite solution, so try a couple of these and see if it helps.
1) Click Start,
Click All Programs – Accessories – Systems Tools,
Click Internet Explorer (No add-ons)
2) Try turning off IE, then turn on again.
then click Control Panel
. Click Programs and Feature
. In the tasks pane, click Turn Windows features on or off
. In the list of windows features, clear the check box next to Internet Explorer 8
. You receive a warning message in a pop-up window. Click Yes
3) Run an sfc scan to fix possibly corrupted system files. SFC /SCANNOW Command - System File Checker