Not all but a lot of icons from exe files only have disappeared and have been replaced with the uknown file icon. That hasn't affected every icon and some of them can be restored manually(properties, change icon) But they are a lot and not everything can be restored.Some can be restored but after a restart some of them change back to unknown file icon.
also in some pages like e-radios , firefox cant load the windows media player embeded on the site and sometimes an error pops up saying something for c++ library... But music from the e-radio is playing and in the place of media player its a black line saying (no video).
Its not malware as i checked it be4.
Its something like that
But on every exe file on my system.Desktop, all programs, C:/program files etc.