Windows 10: When I start computer , after dell logo , black screen comes. how can i solve this ?

When I start computer , after dell logo , black screen comes. then i have to restart my computer by power switch. and now this time problem solved. but after 1 shut down it repeats. Then i tried and figured out that it happends because my laptop automatically starts projection through HDMI without connecting any cable to HDMI port. Can anyone help me ?my pc specs : Laptop name Dell G15 Processor AMD Ryzen 5 6600H with Radeon Graphics 3.30 GHzInstalled RAM 16.0 GB 15.2 GB usableDevice ID 3DE9407A-F195-4D66-A2B6-A7BE10AAF296Product ID 00342-42623-26357-AAOEMSystem type 64-bit oper

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Dell XP’s 13 black screen on power up

I asked that question to find out if black screen come up before or after windows start. Usually you can see manufacturer's logo, covering BIOS P.O.S,T. screen and that's before OS starts booting.

 

Dell XP’s 13 black screen on power up

Only light is power button. The light on caps lock comes on it I press it. No dell logo or anything on the screen just perm at black. Will try some of things suggested. Most common advice is to manually power off 3 times to force start up repair, but this doesn’t happen for me

 

Dell XPS 27 won't start - No Dell logo

Just one information more.

As i keep computer started with his wonderful black screen, i left room and after 15mn i heard 5 beeps sequence.

I came back to room, no dell logo or other but thoses 5 beeps.

I shut down and started again but no Dell Logo, still black screen