Step #1
 . Press the windows button + R or type run in the windows search bar
 . type services.msc
 . search for VGC right click, select properties and set startup type to automatic.
 . restart pc
 . Start valorant

 if it didnt work follow step 2

Step #2
. Delete bwh file in C: drive
. Uninstall vanguard. to confirm its completely removed, open cmd as admin, type "sc delete vgc" and "sc delete vgk" , go to C:/Program Files, and make sure Riot Vanguard folder is not there
. Launch valorant, let it install vanguard, launch the game, press reboot button, let the pc restarts.
. after restart , go to services and set VGC startup type to automatic (explained in step 1)
. Start valorant

if it didn't work follow step 3

Step #3
. Open windows search bar and type msconfig
. Open system configuration and press on Services
. Press "Hide all Microsoft services " bottom left corner
. then press "Disable all"
. Search for VGK and enable it.
. Hit apply, reboot pc, start game.

if it didn't work follow step 4

Step #4 (If you reached step 4, VGC driver has conflicts with another kernel mode driver)
. Install Kernel Mode Drivers Manager
. Run the program and use options > hide microsoft drivers to only show non-microsoft drivers.
. In the list, ignore the driver entries residing in system32 folder ( they shouldn't be the cause of the issue)
. Inspect the remaining entries, if anything is suspicious delete it.
. If you have any software like process hacker, or a driver injector hacker, remove it
 uninstall the program, and search for the .sys and delete it. reboot and start game.
(Common drivers like logitech, after burner and some known companies drivers shouldn't be removed)

If nothing works, you have an unknown kernel driver that conflicts with vanguard and the cheat,
if you installed many hacks, it could be from it, if not then you have an unwanted program that is messing with
the kernel drivers, last solution is to disable everything at start up and start windows in Safe Mode.
and try manually launching VGC and vanguard services and test.

If nothing works, the only solution is to format.