‘no signal’ in my monitor HELP PLEASE !?

this specific morning next time i turned about my laptop it previously worked fine however in YOUR FIVE minutes it deterred by by itself.and when i turn this computer back around the monitor says no signal.what may this suggest i tried fixing that cables and connections, my partner and i also tried opening that cpu along with cleaning it but continue to it didnt do the job:( GUIDE PLEASE!

It may happen caused by motherboard problem

Open CPU.eliminate RAM in clean it

Desire dis helps:)

Check with your monitor connection!