Company owned Lenovo Thinkcentre Tiny PC

Tested with HDMI cable to smart tv. Powers up to BIOS and has a Windows setup screen so it does have OS. Not sure of Windows version.

I5

2nd Gen

1.7 GHz

8 GB Installed Memory

256 GB Hard Drive

Comes with charger

No WIFI adapter but this can be purchased for a few dollars on Amazon if needed.