Browser not allowing access to certain urls

[ess1]

I have a problem in that certain urls are not allowed. Receive msg that "Internet Explorer cannot display ..."There is also a problem in a web page from letsplaychess.com in that the chess board does not display. I have un/reinstalled my AV (KIS 2012) and uninstalled IE9. Both IE8 & 9 have same problem. Other computers running Vista and XP do not have these problems.Assistance appreciated.Thanks.

 

[ess1]

Dear me! I appear to be the only one on forum with this problem.
Just cannot fathom it out why my Win7-64 comp. has this problem.

Have gone through the MS help without success.