I didn't buy this machine to run windows 10, however, the instructions that came with it said, "In order to install Windows 10 you need a network connection." Okay... I have 7 other computers with a wifi network connection, no problem... Nowhere in any of the product descriptions did it say, "No wifi network interface installed". There is no Network card/interface with the box. I had to buy a wifi dongle to get it connected, but by then I'd already blown away Windows 10 for the planned OS, Ubuntu Linux (which is what told me there was no network card. All Windows said was, "no network connection", without any troubleshooting tool or button. Great. No network connection. WHY???).Ubuntu is a simple install, BUT on this hardware, it won't install from a CDROM/DVD for some reason, and when it installs from a USB thumb it doesn't install properly (Linux generally has all the necessary drivers in either the install package or the updates). I've installed from the USB AND the CDROM/DVD numerous times on Lenovo, Dell, and generic hardware, but it will not install properly on this HP (I should have known - since the merger with Compaq more than two decades ago, HP hardware has not been the best. I still have a pre-merger laptop I got from a surplus house that works great - just slow... pre-Pentium, x86 architecture - relegated to TTY.).I have not talked with Tech Support yet, but I already know they probably won't talk to me because I'm no longer dealing with Windows 10 and if typical, they won't have a clue about Linux (I only have one dual boot machine). I'm still debating on whether to try Tech Support or not.I'm still irritated that there was "no wifi in the box" call-out and there was no mention of it in any of the product descriptions. Had I seen "no wifi", I'd have passed...I'll continue to play with it for a while, but the gut tells me this machine will be relegated to the junk pile with the 30 year old hardware I still hoard... (most of which still work to some extent)... pj