Mojave OS is not started up after restart

[chunli]

No.
What is a "Dell Inc. 03CP WF A00" ?
Dells usually have a name like Optiplex or Latitude etc.

I used baseboard information from System Information. I think you mean System model. Ok, I will update it

 

[P1LGRIM]

Looks like you have disk problems.
Maybe booting to recovery and running first aid could help, if not format and reinstall the OS or replace the drive.

 

[chunli]

Maybe booting to recovery and running first aid could help, if not format and reinstall the OS or replace the drive.

Do you mean I need to select Recovery option on Clover?

 

[P1LGRIM]

Do you mean I need to select Recovery option on Clover?

Yes.