I have an HP LP 2475W which was plugged into the HDMI out port.  Moving it to the video card fixed the problem, though it is much slower to boot when in that port.  There are multiple video ports on this monitor - DVI, USB, hdmi, VGA. I need to get to the bios to add an SSD eventually to replace the HDD which seems much slower that it should be for this type of computer.
XPS 8930 connected to monitor via HDMI cable won't boot to the BIOS. The Dell splash screen never appears. F2 nor F12 work. It does boot fine to Windows 11. Boot is somewhat slower compared to a slightly newer laptop, but it does boot and run OK. I need to access the BIOS to add a SSD.
XPS 8930, cannot enter BIOS, no splash screen