Question Computer fully freezing, forcing me to hard reset it ?

[Nuplar]

I have had this issue for the past week or two that when i open up Valorant it fully freezes my computer. It seems like it only happens the first time i open valorant. Once i reset the computer another odd thing happens. It disconnects my pc and my other household devices from the internet. I dont get why this is happening. Any help is appreciated.

 

[rgd1101]

full system spec? include brand and model of the psu

 

[Nuplar]

Motherboard - MSI MEG Z390 GODLIKE
GPU - RTX 2080Ti
CPU - i9-9900K
PSU - ToughPower 1200W
RAM - 32GB Gskill TridentZ