I cant open my valorant tab

I just changed my monitor and just opened valorant setting and I changed the res to 1920 x 1080 it just tabbed me out of valorant I did everything, reinstall, run as administrator but it wont open and when I hold alt tab it shows that the clove background screen is working

Solution

Turn off your pc completly and turn it on again tell me if it fixes the problem if not update your drivers