raceroom has stopped working. Every time I try to open it it starts but nothing appears on the screen and says "no answer" I tried to validate the files, to uninstall but nothing to do, it doesn't work
Don't do that. R3E is not the only game that uses this folder. Dirt Rally (both 1 and 2.0) for example. If you ever need to delete/rename anything, it's this folder: "Documents\My games\SimBin\RaceRoom Racing Experience".