Over a period of 2 days it took over 6 hrs of computer time to UPDATE WIN 10.  The version on the PC was old and had to be updated before I could use and properly evaluate the performance of the PC.  It seems to be quite slow BUT the price was right.  The PC seems to be working fine otherwise.I still need to transfer files and reinstall software and I don't know how long that will take.  The good news is that Microsoft PC Health Check says this PC can be upgraded to WIN 11.Seller should install a fully updated version of operating system or at least let buyer be aware!