This is their game, but our rules.

IC Internal

[Valorant Software]

Supported Operating Systems (OS): Windows 10, Windows 11 
Supported Processors (CPU): Intel, AMD
Supported Video Cards (GPU): Nvidia, AMD
Supported Display Modes: Fullscreen, Windowed, Borderless Windowed

Step 1: Disable Windows antivirus using the Defender Control utility. Remove third-party antivirus and anti-cheats (such as Faceit, ESEA, Easy AntiCheat). Disable Firewall.
Step 2: Go to the website ..., insert your key and download the Loader.
Step 3: Run Loader.
Step 4: Insert the key.
Step 5: Select the server on which you will play. Leave it as standard if it is NA.
Step 6: Click on the "Sign In" button.
Step 7: Configure the product as you need it and click "Apply Settings".
Step 8: Start the game.

[Failed 0 Error]
-> Download the archive
-> Run each file that is in the archive as admin and reboot the PC.
-> If that does not help, manually disable virtual-based security, hyper-v.