I've bought a refurbished Hp elite desktop frebruary 2023. Lasted until august 2024. Got a blue screen and then black screen with PXE over IP4/6. This meant that there was no bootable drive. tried an ssd but the sata port was giving issues so i installed another nvme and worked perfectly. I understand this is refurbished but spend a little more on a better nvme. replace mined with a silicon power nvme and is working perfecltyIf you get a pc with either the Memory is different or install a OS in  your harddrive or PXE over Ip4. the e hard drive is not detected or its either dead and you need to replace it. in some cases you might need to change the boot order on the BIOS or enable/ disable legacy boot.  Please look at my image because that is the hard drive its a slim stick called an nvme. way faster than HDD or SDD. Main reason most of these come with nvme is because the sata port might not work or the cable is damaged or lost.