Hi there, I’m very new to this forum and didn’t know where to post this so apologies if I’ve got the wrong board. I recently started attempting to install Windows 7 on my mid-2020 iMac however have been unsuccessful in my attempts, as when booting into it, Setup or installed, I get a BSOD with 0x7E BSOD, exception c05 (access violation), and 2nd parameter (instruction) is zeroed out. No driver was attached in the blue screen and I’m having trouble attaching a kernel debugger due to the lack of ports and adapters not working.
Here are the steps I have attempted:
- Using all official Apple BootCamp drivers (including AppleSSD.sys) in the install which technically worked after patching the storage driver but still resulted in the same blue screen.
- Using generic drivers, which also didn’t work.
- Official drivers from each component manufacturer’s website.
- Of course, using the FlashBoot Pro UEFI extension so it works at all (used in all attempts).
- Attempting to attach a kernel debugger, which I still have trouble doing as I tried KDNET as a last resort but obviously windows 7 does not accept it as a target.
I seek help from this forum as I’ve tried multiple other communities like Reddit, which went to no avail.
I also tried OpenCore, which I will still be using for some patches but get no result. Here I have attached my hardware specifications, and if you would like any additional information please let me know.
Hardware summary
Machine
-
Apple iMac20,1
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Intel 8-core Core i7 @ 3.8 GHz — consistent with the i7-10700K configuration
-
8 cores / 16 threads
-
16 MB L3
-
20 GB RAM
-
Comet Lake / Intel 400-series platform
-
Apple T2/iBridge present
Graphics
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AMD Radeon Pro 5500 XT
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PCI\VEN_1002&DEV_7340 -
AMD HDMI/DP audio:
1002:AB38 -
Intel iGPU also enumerates as
8086:9BC5
Storage
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APPLE SSD AP0512N
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PCIe/NVMe
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Apple ANS2 storage controller
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ANS2 identities include
106B:2005/ compatible106B:1800 -
NVMe 1.10 reported
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4096-byte logical/physical sectors
Intel platform
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Host bridge:
8086:9B43 -
LPC/eSPI:
8086:0685 -
xHCI USB:
8086:06ED -
Management Engine interface:
8086:06E0 -
SMBus:
8086:06A3 -
Platform/thermal device:
8086:06F9
Networking
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Broadcom Wi-Fi:
14E4:4464 -
Apple subsystem:
106B:07BF -
Broadcom 57766-A1 Ethernet
-
Ethernet PCI ID:
14E4:1686
Thunderbolt / secondary USB
-
Intel Thunderbolt bridge:
8086:15EA -
Thunderbolt NHI:
8086:15EB -
Thunderbolt xHCI:
8086:15EC
Audio
-
Apple/T2 audio devices
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Internal speakers + microphone
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Headphone/microphone paths
-
AMD GPU audio
1002:AB38
Edit by Fernando: Thread moved into the “Win7” Category and title customized