Vanguard (Valorant)

Anti-cheat somehow did not want to be installed. After first loading the game asking me to restart the computer, dies normally, but when enabled crashes a blue screen( on the computer experiencing the problem Windows collects error information and so on), the computer restarts again. Go into the game and I again asked to restart the computer, it does not pomogat and so I'm constantly this petition, but the blue screen. The funny thing is that he is anti-cheat installed to drive C/ Program Files/ Riot Vanguard, but either the game does not see him or something. A friend has the same problem, don't know what to do.