Watch this space. Currently no fix for this. You have to shutdown if you don’t want your computer and monitor on all night.

Windows 10 also has a problem with some devices even preventing the screensaver. Unplug joysticks etc, or just shutdown.

I’ll update when there is a fix or workaround.

UPDATE

as of 29/8/2015, update KB3081448 or KB3081452 or KB3081449 (they don’t tell you what they fix) seems to have fixed the sleep problem.

Ill keep you updated.

UPDATE

NOT fixed. Now does go to sleep, then wakes up within 10 or 20 seconds.

UPDATE

If you disable all wake events (power) it will sleep now. Still wakes up when it feels like it, but seems to be improving.

UPDATE
in device manager find your network device. open properties and on the power tab untick ‘Allow this device to wake the computer’. Computer will now sleep much more reliably.

So your language and locale are set to one of the supported languages/locales but Cortana refuses to allow you to switch it on with a ‘language or locale not supported’ message.

You upgraded right?

Bad news: you need to do a clean install of windows 10.

Good news: Cortana will now work properly.

Oh, and make sure your language and locale match.

Well, windows 10 arrives and we wait for audio drivers. The built in ones only provide 5.1 audio when using Edge/IE. So you’ve only got 2 channel sound (no speaker fill) and when you open the sound properties you get an enhancements warning.

These drivers worked for me (VIA Vinyl 2021 HD) and I guess for most VIA audio codecs.

http://download.viatech.com/en/support/driversSelect.jsp

Nothing special to do, just install and enjoy. One thing I did notice is the HD Vdeck app does not open.

[Update]
the HD Vdeck app now opens under TH-2 build 10532 of windows
[/Update]