nuthouseprobably not the reason but i'll still mention it just in case you have valorant but vanguard, the game's anticheat, causes this as well.
after installing Valorant and Vanguard, it completely fucked my Windows install. Deleted all registry entries for Windows Defender and Windows Update, had to reinstall.
And no, before anyone says it was a virus, I built the PC 20mins before that happened and Valorant was the first thing I installed.
Be wary of Vanguard.