Installed FSX:SE on my new PC. 
When I try to switch from full screen mode it does a CTD, haven't tested anything more but i guess it could happen. 

Analyzing the mdmp file with WINDBG (no event in appcrash view) this is what i get:

*** WARNING: Unable to verify checksum for RAASAUDIO32.DLL
*** WARNING: Unable to verify timestamp for XAudio2_4.dll
*** WARNING: Unable to verify timestamp for xactengine3_4.dll

KEY_VALUES_STRING: 1

    Key  : AV.Dereference
    Value: NullPtr

    Key  : AV.Fault
    Value: Read

    Key  : Analysis.CPU.Sec
    Value: 5

    Key  : Analysis.DebugAnalysisProvider.CPP
    Value: Create: 8007007e on DESKTOP-53952GP

    Key  : Analysis.DebugData
    Value: CreateObject

    Key  : Analysis.DebugModel
    Value: CreateObject

    Key  : Analysis.Elapsed.Sec
    Value: 158

    Key  : Analysis.Memory.CommitPeak.Mb
    Value: 336

    Key  : Analysis.System
    Value: CreateObject

    Key  : Timeline.Process.Start.DeltaSec
    Value: 104

COMMENT:  Minidump: D:\Program Files (x86)\Steam\steamapps\common\FSX\fsx.exe

CONTEXT:  (.ecxr)
eax=00000000 ebx=79188a94 ecx=d878409a edx=00000000 esi=0722d684 edi=0722d364
eip=7a312abd esp=00a6f8fc ebp=00a6f920 iopl=0         nv up ei pl zr na pe nc
cs=0023  ss=002b  ds=002b  es=002b  fs=0053  gs=002b             efl=00010246
g2d+0x22abd:
7a312abd 8b08            mov     ecx,dword ptr [eax]  ds:002b:00000000=????????
Resetting default scope

EXCEPTION_RECORD:  (.exr -1)
ExceptionAddress: 7a312abd (g2d+0x00022abd)
   ExceptionCode: c0000005 (Access violation)
  ExceptionFlags: 00000000
NumberParameters: 2
   Parameter[0]: 00000000
   Parameter[1]: 00000000
Attempt to read from address 00000000

PROCESS_NAME:  fsx.exe

READ_ADDRESS:  00000000 

ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s.

EXCEPTION_CODE_STR:  c0000005

EXCEPTION_PARAMETER1:  00000000

EXCEPTION_PARAMETER2:  00000000

STACK_TEXT:  
WARNING: Stack unwind information not available. Following frames may be wrong.
00a6f920 7a3122b5 00000000 0722d348 07638010 g2d+0x22abd
00a6f990 7a3738af 16648cd8 07638010 0722d348 g2d+0x222b5
00a6f9b8 79a8b8b0 79ee7d80 16648cd8 00000001 g2d+0x838af
00a6fb0c 79a83fc2 00000000 16648cd8 00000000 window+0xb8b0
00a6fb30 79f1776e 16648cd8 00a6fb94 79ee7d80 window+0x3fc2
00a6fb7c 79a84051 79a83f80 00a6fb94 00a6fbb4 api!Ordinal221+0x5ce
00a6fb8c 7a651b36 00000001 00000000 011cc530 window+0x4051
00a6fbb4 7a651930 0719d0f0 79f1fa77 011cc530 main+0xa1b36
00a6fbf8 79f48c21 00b63410 00b63410 ffffffff main+0xa1930
00a6fc24 79f1f8b7 00a6fcd8 00b62757 00b62730 api!Ordinal222+0xc261
00a6fc2c 00b62757 00b62730 00b63410 794bcd96 api!Ordinal17+0x2787
00a6fcd8 770af989 00e38000 770af970 00a6fd44 fsx+0x2757
00a6fce8 773e7084 00e38000 8d2bce86 00000000 kernel32!BaseThreadInitThunk+0x19
00a6fd44 773e7054 ffffffff 77406294 00000000 ntdll!__RtlUserThreadStart+0x2f
00a6fd54 00000000 00b6189c 00e38000 00000000 ntdll!_RtlUserThreadStart+0x1b

SYMBOL_NAME:  g2d+22abd

MODULE_NAME: g2d

IMAGE_NAME:  g2d.dll

STACK_COMMAND:  ~0s ; .ecxr ; kb

FAILURE_BUCKET_ID:  NULL_POINTER_READ_c0000005_g2d.dll!Unknown

OS_VERSION:  10.0.19041.1

BUILDLAB_STR:  vb_release

OSPLATFORM_TYPE:  x86

OSNAME:  Windows 10

FAILURE_ID_HASH:  {428a70f3-f389-5566-b6cd-f9cf0df8a538}

Followup:     MachineOwner
---------

0:000> !analyze -v
*******************************************************************************
*                                                                             *
*                        Exception Analysis                                   *
*                                                                             *
*******************************************************************************

KEY_VALUES_STRING: 1

    Key  : AV.Dereference
    Value: NullPtr

    Key  : AV.Fault
    Value: Read

    Key  : Analysis.CPU.Sec
    Value: 2

    Key  : Analysis.DebugAnalysisProvider.CPP
    Value: Create: 8007007e on DESKTOP-53952GP

    Key  : Analysis.DebugData
    Value: CreateObject

    Key  : Analysis.DebugModel
    Value: CreateObject

    Key  : Analysis.Elapsed.Sec
    Value: 2

    Key  : Analysis.Memory.CommitPeak.Mb
    Value: 337

    Key  : Analysis.System
    Value: CreateObject

    Key  : Timeline.Process.Start.DeltaSec
    Value: 104

COMMENT:  Minidump: D:\Program Files (x86)\Steam\steamapps\common\FSX\fsx.exe

CONTEXT:  (.ecxr)
eax=00000000 ebx=79188a94 ecx=d878409a edx=00000000 esi=0722d684 edi=0722d364
eip=7a312abd esp=00a6f8fc ebp=00a6f920 iopl=0         nv up ei pl zr na pe nc
cs=0023  ss=002b  ds=002b  es=002b  fs=0053  gs=002b             efl=00010246
g2d+0x22abd:
7a312abd 8b08            mov     ecx,dword ptr [eax]  ds:002b:00000000=????????
Resetting default scope

EXCEPTION_RECORD:  (.exr -1)
ExceptionAddress: 7a312abd (g2d+0x00022abd)
   ExceptionCode: c0000005 (Access violation)
  ExceptionFlags: 00000000
NumberParameters: 2
   Parameter[0]: 00000000
   Parameter[1]: 00000000
Attempt to read from address 00000000

PROCESS_NAME:  fsx.exe

READ_ADDRESS:  00000000 

ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s.

EXCEPTION_CODE_STR:  c0000005

EXCEPTION_PARAMETER1:  00000000

EXCEPTION_PARAMETER2:  00000000

STACK_TEXT:  
WARNING: Stack unwind information not available. Following frames may be wrong.
00a6f920 7a3122b5 00000000 0722d348 07638010 g2d+0x22abd
00a6f990 7a3738af 16648cd8 07638010 0722d348 g2d+0x222b5
00a6f9b8 79a8b8b0 79ee7d80 16648cd8 00000001 g2d+0x838af
00a6fb0c 79a83fc2 00000000 16648cd8 00000000 window+0xb8b0
00a6fb30 79f1776e 16648cd8 00a6fb94 79ee7d80 window+0x3fc2
00a6fb7c 79a84051 79a83f80 00a6fb94 00a6fbb4 api!Ordinal221+0x5ce
00a6fb8c 7a651b36 00000001 00000000 011cc530 window+0x4051
00a6fbb4 7a651930 0719d0f0 79f1fa77 011cc530 main+0xa1b36
00a6fbf8 79f48c21 00b63410 00b63410 ffffffff main+0xa1930
00a6fc24 79f1f8b7 00a6fcd8 00b62757 00b62730 api!Ordinal222+0xc261
00a6fc2c 00b62757 00b62730 00b63410 794bcd96 api!Ordinal17+0x2787
00a6fcd8 770af989 00e38000 770af970 00a6fd44 fsx+0x2757
00a6fce8 773e7084 00e38000 8d2bce86 00000000 kernel32!BaseThreadInitThunk+0x19
00a6fd44 773e7054 ffffffff 77406294 00000000 ntdll!__RtlUserThreadStart+0x2f
00a6fd54 00000000 00b6189c 00e38000 00000000 ntdll!_RtlUserThreadStart+0x1b

SYMBOL_NAME:  g2d+22abd

MODULE_NAME: g2d

IMAGE_NAME:  g2d.dll

STACK_COMMAND:  ~0s ; .ecxr ; kb

FAILURE_BUCKET_ID:  NULL_POINTER_READ_c0000005_g2d.dll!Unknown

OS_VERSION:  10.0.19041.1

BUILDLAB_STR:  vb_release

OSPLATFORM_TYPE:  x86

OSNAME:  Windows 10

FAILURE_ID_HASH:  {428a70f3-f389-5566-b6cd-f9cf0df8a538}

Followup:     MachineOwner
 

Anyone can help a noob with this error?

Thanks

lots of results on google about this, and could be a few different things

https://lmgtfy.com/?q=win+10+fsx+full+screen

 

Maybe Google about the g2d.dll.  Also download and read through the AVSIM CTD Guide.