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BSOD during windows startup; can't safe mode; startup repair can't fix
Consistent BSOD during Windows startup for both normal mode and safe mode. BSOD problem started shortly after buggy installations of Microsoft Visual C++ 2005 x64, Microsoft .Net Framework 1.1, and AMD Catalyst Drivers 13.9; and turning off Microsoft .Net Framework 3.5.1.
Startup Repair is consistently unable to fix: 0x0000007e (0xffffffffc0000005, 0xfffff800033bf6d6, 0xfffff880009a7578, 0xfffff880009a6dd0).
I accessed the dump file of the BSOD-inflicted drive by usb-connecting it to the same pc, but that's now running a functioning, system hard-drive.
BlueScreenView shows these following files to be problematic:
atikmpag.sys
dxgkrnl.sys
dxgmms1.sys
The hash of the atikmpag.sys from the BSOD-inflicted drive is identical to the one in the functioning drive, so I don't think this is the root problem.
However, the hashes of the two dx files (dxgkrnl.sys, dxgmms1.sys) are different. I have replacement files for the broken dx files, but I don't have, nor know how to get, the access permission to replace them.
I'm at a loss for what I can try at this point. I used DM Log Collector and uploaded the resulting file. Any help is appreciated, thanks.