Not rendering model...just showing a dark, mostly black screen

I can’t get my V-Ray to render properly suddenly. Things were fine earlier today, but then while I left something to render and I came back to the computer, I found the computer down. Once I got it going, even after restarting again and again, the rendering viewer screen is very dark…mostly black.

Would you please give me some idea of what to do to fix this? Let me know what you need me to check, etc.

Kind regards,

Please disregard…it’s working fine now. Strange…

Thank you anyway!