Microsoft narrows Win10 upgrade options to 'Upgrade now' or 'Upgrade tonight' | InfoWorld
I suspect this is related to the fact that yesterday Microsoft moved KB3035583 (the GWX app) to Important. Remember to keep your updates on manual and screen for this. If your parents are anything like mine, when you go to Christmas dinner, you might have to revert their system for them.
There was nothing wrong with Vista. What WAS wrong was Microsoft allowing OEMs to put Vista on machines which were equipped with as little as a single core Celeron and 1GB RAM and could barely run XP. This is the only reason Vista has the reputation it does, and why Microsoft decided to pull a Windows 98SE move instead of a Windows XP SP2 move.
Actually my netbook originally came with 1024MB RAM and a single core Atom CPU with hyperthreading. I upgraded the RAM to 2048MB and criticized Intel for using DDR2 when the DDR3 was already mainstream.
Most recently I upgraded the storage to a 500GB hard disk. SSD products are kinda useless with SATA 150 ports.
The operating system was originally Windows 7 starter, now it has Windows 10 Home x64
windows 10 is still a ways from being mainstream ready, probably a good 6-12 months more work is needed before all the problems are cleaned up
what is out now is on par with how vista faired, when 7 shipped it was vista done right
i expect that 10 will be updated lots over the winter