Black screen when on but work when forcely shutdown and restart

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@thz_z_vinod_ wrote:

I have  Vostro 15 3568 laptop and when i try to on my laptop, dell logo appears and then screen shut down. Then I forcely shutdown my laptop by pressing power button and again power on it shows set recovery or restart i pressed restart and my laptop works fine. I don't know what problem is going on, is it hardware or software.

P.s. i have already updated all updates from window updates and full reset is also done 2 times but nothing changes, firmware update is already checked but didn't work. Please help if anyone know something.

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Try disabling Fast Start 

I have tried it, but still getting issue few times and other time it work but sometimes issue show. Before this fix all time issue showed but know few times 

All I can suggest is to run Dell Diagnostics.