I0804 10:46:11.461210 17280 device_opencl.cpp:48] CLEW initialization succeeded.
I0804 10:46:11.813313 17280 device_cuda.cpp:56] CUEW initialization failed: Error opening the library
Error   : EXCEPTION_ACCESS_VIOLATION
Address : 0x00007FF6ACB9F5F5
Module  : blender.exe
Thread  : 0000233c
Switching to fully guarded memory allocator.
Blender 2.91.0 Alpha
Build: 2020-08-03 05:39:37 Windows Release
argv[0] = C:\Users\user\Downloads\blender-2.91.0-144f780c71ed-windows64\\blender
argv[1] = --debug
argv[2] = --debug-cycles
argv[3] = --python-expr
argv[4] = import bpy; bpy.ops.wm.sysinfo(filepath=r'C:\Users\user\AppData\Local\Temp\blender\debug_logs\blender_system_info.txt')
Read prefs: C:\Users\user\AppData\Roaming\Blender Foundation\Blender\2.91\config\userpref.blend
read file C:\Users\user\AppData\Roaming\Blender Foundation\Blender\2.91\config\startup.blend
  Version 291 sub 0 date 2020-07-26 22:08 hash ba9c88ce1864
found bundled python: C:\Users\user\Downloads\blender-2.91.0-144f780c71ed-windows64\2.91\python
read file 
  Version 280 sub 39 date unknown hash unknown
read file C:\Users\user\AppData\Roaming\Blender Foundation\Blender\2.91\config\startup.blend
  Version 291 sub 0 date 2020-07-26 22:08 hash ba9c88ce1864
read file 
  Version 280 sub 39 date unknown hash unknown
read file C:\Users\user\AppData\Roaming\Blender Foundation\Blender\2.91\config\Video_Editing\startup.blend
  Version 290 sub 4 date unknown hash unknown
read file C:\Users\user\Downloads\blender-2.91.0-144f780c71ed-windows64\2.91\scripts\startup\bl_app_templates_system\Video_Editing\startup.blend
  Version 280 sub 39 date unknown hash unknown
blo_find_main: added new lib C:\Users\user\AppData\Roaming\Blender Foundation\Blender\2.91\config\Video_Editing\startup.blend
read file C:\Users\user\AppData\Roaming\Blender Foundation\Blender\2.91\config\Video_Editing\startup.blend
  Version 290 sub 4 date unknown hash 
Writing: C:\Users\user\AppData\Local\Temp\blender.crash.txt