My computer has been failing the fan then I found in a tutorial that had to update the bios to be able to configure the speed. When updating through Windows, the update program rebooted the pc but the leds were on and the black screen for a long time and did nothing else.

Try to turn off the computer by pressing the power button but nothing happens then disconnect the battery.

Then I turned the computer back on and the multimedia LEDs lit one after the other and the screen did not turn on.
I have tried several things to fix it that worked on other Vostro models but for my case they have not worked.

en.community.dell.com/.../19593398

www.cnet.com/.../

Could someone please help me?