I did a fresh install of 7 Ultimate release on my old eMachines PC fine. Everything worked - no problem. I then did the Windows 10 upgrade but when finished, i had no network connection even though the Realtek RTL8139 driver was working properly according to device manager. I tried putting in a USB Network adapter, but there was no USB drivers and device manager said USB Mass Storage Device was missing. Then i tried doing a fresh install of Windows 10 from a bootable USM stick. The install started but then said there were no USB drivers available. What a F#@^ing hassle! How can i get this thing updated to Windows 10? I thought since Windows 7 worked perfectly, The Windows 10 upgrade would be smooth. i did two other PC upgrades with no problem. Any idea what the issue is with my network and USB? The Emachines web site only have drivers for Vista for the most recent.