not able to open store and pc settings

Dear all, Yesterday my HP sleekbook arrived (cheaper amd version) with windows 8. Everything works fine except that I can't open the store or pc settings. When I click on the store tile, or click on the more settings button, the fullscreen (green for store, blue for settings) icon fills the screen en then dissapears. I have tried the sfc / scannow option but this did not work after 3...