I cloned the hard drive from my old computer which was on it's last legs to a new Samsung 870 EVO, and replaced the El Cheapo SSD in the system. I had a few days of frustration in getting the BIOS to recognize the new drive (Yes, I tested the new SSD on another system and it worked perfectly). It did not recognize any boot devices.I called tech support and the technician had me reset some options on the BIOS. No luck on that. I remembered that many years ago, I disabled devices on a system, and then re-enabled the devices. Viola, I was able to get the BIOS to recognize the new SSD.Impressive. Windows 10 Pro boots in about 10 seconds.32 GB of memory and a 1 TB SSD and an optical CDRW drive for almost nothing ($250.00).Superb. I'm impressed, and I am an old school techie.Good work HP. Good work, Skytech on the refurb.