No response still system shows black after dell logo, even recover bios but no response 

Depending on the system model, this article (How to Recover the BIOS on a Dell Computer or Tablet)  might help. 

This seems to be an issue with the Windows OS. Has there been any recent software changes made like installing a new game, application or Windows updates?

Restart the computer & tap F2 to get into BIOS & set BIOS to defaults.

If the system still does not boot, try a system reset. When you see the Dell logo power off the computer using the power button. Turn it back on & power off again using the power button when you see the Dell logo. Try this for 3-4 times &the system enter the advanced repair options where you can reset the system back to factory settings.

Please note- There are chances that you may lose all data.

Welcome to the Dell Community @Handsome Devil 

Try holding down the " D " key and power-on.

Does it cycle through the Display Test???

To better assist you, the members would need the exact model number of your laptop/desktop???

Identify your Dell:

https://www.dell.com/support/contents/us/en/04/category/product-support/self-support-knowledgebase/l...

Best regards,

U2

PLEASE DO NOT POST ANY SERVICE TAGS!!!

its working perfectly but i am facing only black screen issue after dell logo and F2 Bios and F12 Boot Menu function not work still black screen.

Display test working perfectly but i am facing only black screen issue after dell logo and F2 Bios and F12 Boot Menu function not work still black screen.

Hi dear , 

good evening @Handsome @U2CAMEB4ME @AdrianG001 ,

can you please write me in details how you solved the issue, I’m facing same problem , even (cntrl +alt+ delete) isn’t responding!

I mean can you write me the steps of how to downgrade bios and how to enter boot menu please sir 🥺 

best regards