I am encountering this problem on Windows 10 Pro

Errors i am seeing:
- i can't run Outlast, Geometry Dash, Assassin's Creed (even i reinstalled them) [separate errors]
- I am seeing less options [Shut Down & Log off, Task Manager] (on Right-Click Context Menu on Start Button)
- *APPNAME*.exe - Bad Image; C:\Windows\System32\dbgcore.dll is either not designed to run on Windows or it contains an error...
- *APPNAME*.exe - Application Error; The application was unable to start correctly (0xc0150002)

i unlocked the Adminstrator Account and the Right-Click Context Menu on Start Button has complete options, i didn't damage any system files, i think this error came from one thing that i don't know (a virus maybe?), how will i fix this? thanks for any response.

EDIT: i tried sfc /scannow and DaRT, Reset This PC options but nothing worked (Reset freezes at 8% and fails)
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