I am using win 7 home premium. Yesterday everything was okay. But today when I turn on my computer and try to start photoshop it crashed at startup. I tried to reset preferences ctrl+alt+shift did not helped. I tried only shift it did not hepled. I uninstall all creative cloud software and used AdobeCreativeCloudCleanerTool to clean everything and then install photoshop, lightroom and bridge. It did not helped. Lightroom and bridge are working but photoshop does not start.