blank screen at boot *** updated now just trying to get radeon rx 550 to work

[Fr3d3r1ck]

 i have a pavillon 590-p0090

i ve installed and updated  window 10 updated driver from hp support page

everything is going well.

Then after turning the pc off, i install the asus radeon rx 550 4gb i ve bougth for it, plug the screen in the video card and turn the pc. : fan start but no bip as far as i m concern. (i don t remember it bipping when working well before either anyway)

- i tried to plug the display in the motherboard hdmi socket, still no signal.

- I turn off the pc remove the radeon card, plug into the motherboard hdmi, still no signal.

- turn off, remove motherboard batery for a minute, then turn on, still no signal

- Try to start the computer with window 10 recovery in a usb, still nothing

I m out of idea and about to ask newegg for a RMA.

At this point i don't care much about installing or not the rx 550, integrated intel would be ok

[Fr3d3r1ck]

*** update ***

while trying to make rx 550 work i had gone trought the input selection of the display and left it on the wrong one.

So once radeon rx 550, removed computer work fine like before.

i ll still try to look about unlocking the bios or otherstuff like it from other post, or any suggestion left here

and i ll update it here if i manage to do for the benefit of other

It should be possible considering the 590-p0057 come with a rx 550 in, wich is the reason i ve bougth it rather then a rx 460 or 560 for wich i was considering the psu to be too low