I recently bought a secondhand "barebones" HP Prodesk 600 G3 Mini to build a simple linux desktop with, and it refuses to boot to BIOS.
The fans are running, the CPU is hot, but it has no display output in either Displayport.
PC details:
Intel i5-7500
16 GB (2x8GB) DDR4 RAM
128 GB M.2 SSD
PC...