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dxdiag.txt will not be there until you make it, in the way I described.

The other files I asked for are in your Documents/Paradox Interactive/CK2/ folder, not in the Steam CK2 folder in your screenshot.
 
That's a pretty old video driver, you might check with Dell for any available update to it. Failing that intel themselves:

The windows error against ck2game.exe is typical of an antivirus getting in the way. Which one do you use? Add ck2game.exe to the exceptions list of your antivirus app; ESPECIALLY if you have Windows Defender, add it to the Ransomware "Apps Allowed Through" list.
 
I see, so perhaps that save game is corrupted and crashing the game when it even tries to read that file. That's pretty bad if so!