Open Notepad, or a text editor of choice, and copy the four lines of the long Device IDs shown. In the drop-down box select Hardware IDs. Right click on this, and select Properties, then click the Details tab. You’ll see a line under Display Adapters called something like “Intel Display Graphics”. Boot into Windows 10, log in, and open the Device Manager. Navigate through the options until you’re allowed to boot with options, at which point Safe Mode or Safe Mode with Networking is the choice needed. We’re disabling the Intel graphics, which won’t affect the use of the iMac, which primarily runs on the Radeon under normal circumstances. They’ll have the integrated Intel graphics and some version of an AMD Radeon. Note that these iMacs have two video cards onboard. This is where we can easily fix this particular issue. One or two reboots will happen, upon which Windows will start up the System Repair. The biggest issue, however, is that Windows immediately grabs an “updated” Intel Graphics driver, installs it, and then blue-screens. Under Windows 10, booting from a USB stick into a UEFI mode, Bootcamp 5.1 drivers install and work correctly but sound from the onboard Cirrus Logic WILL NOT WORK. RAM, disks, and display are pretty easy to install. The 2011 model is the last of the thick, optical drive-equipped and easily serviceable iMac series. I’m a tech, and in this environment we use Apple’s excellent iMacs with Windows and macOS. This issue has yet to be resolved in Windows LTSC (Build 1809) This guide should fix the issue with igdkmd64.sys and a BSOD

Install windows 10 imac 2011