I tried upgrading my notebook to Windows 10. What a mess! I was able to correct most of the problems, but two that I find important (messed up sound) and WIFI (stopped working) made me glad that I had an image backup of my system before installing this piece of junk.

I was able to fix the sound problem temporarily by installing the Windows 8 driver. That fixed that problem until Windows 10 decided that I needed to update the driver and did so automatically for me. I could not find a way to disable this update.

WIFI was strange... Windows recognized my WIFI card and said it was working properly, however, it would not show up in the available network connections area. I had it looked at by a "professional" at Staples to no avail. They also tried installing a USB WIFI solution with the same effect.