Error   : EXCEPTION_ACCESS_VIOLATION
Address : 0x000000007512241B
Module  : atio6axx.dll
Thread  : 00002a58
Switching to fully guarded memory allocator.
Blender 2.91.0
Build: 2020-11-25 09:02:56 Windows Release
argv[0] = C:\Program Files\Blender Foundation\Blender 2.91\\blender
argv[1] = --debug
argv[2] = --debug-cycles
argv[3] = --python-expr
argv[4] = import bpy; bpy.ops.wm.sysinfo(filepath=r'C:\Users\Bobs\AppData\Local\Temp\blender\debug_logs\blender_system_info.txt')
read file 
  Version 280 sub 39 date unknown hash unknown
Writing: C:\Users\Bobs\AppData\Local\Temp\blender.crash.txt