Deleting a program is never good, it leaves too many file pieces in various places. You need to uninstall.
Would recommend you run the Script Cleaner http://helpx.adobe.com/creative-suite/kb/cs5-cleaner-tool-installation-problems.html
Ok thank you !!
In fact , I didn't uninstall photoshop, just deleted it
I have just uninstalled it and installed it again and it's working now
but thank you !
If I'll have others problems later, I will use the CC cleaner
thank you for your answers !!
And i'm sorry for my bad english