obelisk

Hello, It so happened that i had just stated the new pc and was just updating all drivers and stuff. There was a bios update which i started and mid way during the process, our home's electricity got cut. Afterwards whenever i start the pc all i hear are beeps, there is no display output...

I have an hp omen obelisk 875-0034 and I am wondering if I can upgrade my 1660ti to an etc 2070 or 2060 super. Also, will I have enough ventilation because I raised the computer off the ground so it could ventilate more.