3 Replies Latest reply on Jan 13, 2017 1:38 PM by redfury

    Trouble with radeon r7 240 been known as amd iommu device


      Hello everyone, sorry for my english, but here's my problem: my radeon r7 240 doesn't work as a VGA anymore, now windows is considering it as iommu device, I re-installed the drivers, reset, everything that I remembered to do,but it still didn't work, what should I do to solve this problem?

      • AMD Graphics Card
        • AMD R7 240 1GB DDR5(with the problem)
      • Desktop
      • Operating System
        • Windows 7 Ultimate (x64) Service Pack 1 (build 7601)
      • Driver version installed
        • Radeon Software Crimson Edition 16.2.1
      • Display Device
        • LG E1941 1366*768 to HDMI adapter
      • Motherboard
        • Gigabyte Technology Co., Ltd. F2A88XM-D3H
      • CPU/APU
        • 3,90 gigahertz AMD A8-6600K APU with Radeon HD Graphics 8570D
      • Power Supply Unit  Make, Model & Wattage
        • WiseCase 600W
      • RAM
        • 4GB


      • The Graphic Card was working but suddenly it stopped been recognized by the PC as a Graphic Card, instead, it's been detected as a System device called AMD IOMMU Device.
      • There's a picture anexed showing the problem, the picture is in brazilian portuguese, it shows my windows device manager(or a name similar to this, I always used windows in portuguese as I myself am brazilian - again, sorry for my bad english)

      What should I do?