VALORANTV
VALORANT6mo ago
93 replies
wilofi

TPM AND IOMMU ISSUE

hello after getting this error with tpm and iommu is needed
i do the steps and enable everything that is required
including ptt and vt-d
and then i get error "- an iommu restriction has been applied, however a system restart is required to complete initialization"
and while restarting i insta get a bsod with a message "- driver verifier dma violation" and cant boot into windows anymore 🙂 (fresh windows install)
i tried many actions including reinstalling vanguard (after bsod and iommu off since thats the only way i can boot into windows) reseting verifier in cmd installing fresh windows again, with chipset drivers,usb,gpu and i have the same issue.... it was never required and now i cant do anything... i go by instructions riot provides and i confirm that these security requirements are running but bsod happens every time that "an iommu restriction has been applied, however a system restart is required to complete initalization" happens, to be able to boot back into windows i need to disable iommu... and after that if iommu is on its just a loop of bsods , Z790 hero newest version of bios. (going by the meaning of the bsod i should have a driver that causes it but it doesn't make sense cause only drivers i install is my usb card and nvidia with chipset -.-)
vanguard_error.PNG
iommu_enabled.jpg
wheniommuenabled.png
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