I bought a new RX 550 4Gb PowerColor to Upgrade my HP Pavilion p6 2109.
I bought a new power supply with 650 W too (Because the original PS is only 300 W).
But with this new RX, i have no image at all. The cooler of graphic run, but no image, appears a black screen.
I uninstall the old drivers of my Nvidia gforce 645 2Gb with no results.