Try downloading and running SuperAntispyware from here
(the free HOME edition is sufficient for your needs)
Also If you are running Internet Explorer 7, try running it with add-ons
Start > Programs > Accessories > System Tools > Internet Explorer (No
Try reproducing the problem again. If it doesn't appear again, one of your
add-ons are causing the problem.
To disable add-ons (applies for IE6 too), start Internet Explorer as normal,
Tools, Manage Add-ons, Enable or Disable Add-ons. Disable all the add-ons
and enable them one by one till the problem appears and you get the culprit.
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