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Hi Patrick,
My name is Igor, it's a pleasure for me to help others and I'll do all my best to help you.
Please check if both adapters are presented in the Device manager and what drivers are installed.
Error Event ID 15 - Source HAL. Second GPU not appearing on Task Manager or Device Manager. What do?
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Anonymous
I have two GPUs - an AMD Radeon and a GeForce GTX 1650. They both used to appear on the Task Manager and the Device Manager, and now only the AMD Radeon does. I have spoken to someone who is techy and they showed me the Event Viewer which showed an error message from two days ago which was Event 15 and the source was HAL. Have not seen this problem anywhere else. Don't know what it means, it is described as saying "The iommu has detected an error." From a brief internet search it said something about drivers, so I think this may be the error which is connected to my GTX not appearing on Task Manager. If it isn't I will look further on the Event Viewer, and see what other errors it could be. Essentially, though, what do I do?
Windows for home | Windows 11 | Devices and drivers
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