Intel doesn't officially support Windows 10 on platforms this old, so indeed you must be running on the Microsoft compatibility drivers. If you run into any problems, you are on your own; Microsoft will not help you either; their stance appears to be: if it works, great; if it doesn't, don't call us; if you call, we don't respond (and folks tell me they don't).
Thank you for the support. I must note that this is my wife's computer. It originally had Windows 7. Then if was upgraded to 8 and when Microsoft starting pushing Windows 10, she went for it. It does run more stable on the 1511 build than on the more recent ones. In checking around ,I noted that Intel had a math problem with the older pentium processors. But that was back in 1994.I'll probably have to live with this or buy a Windows 7 disk and revert back. I note that as far as the IPDT from Intel. There's not much documentation on reading the report, ether on the web or from Intel.