I have an HP Pavilion HPE H8 1112C Desktop. I upgraded the PSU to supposedly 625W and installed a GeForce GTX 770 video card.The computer would not boot up with the card installed. I took it to Best Buy where I bought the card and asked them to install it. They told me that the motherboard had been flashed by HP to prevent the installation of 3rd party components. Is this possible or maybe I just have a poor power supply.
Thanks