I have tried to upgrade my Vaio SVF1421P2EW to Windows 10 but reverted back to 8.1 as could not connect to the internet. I searched to see if the model is compatible to the upgrade, but the support site is really poor and unclear. I followed the instructions....all seemed to go well, but I have spent hours trying to fix the internet connection problem and in the end gave up. Anyone have any advice? I have upgraded our other 2 laptops (not Vaios) to Windows 10, no problem at all....wondering why Vaio has issues and very little information in support ...except don't upgrade!!