Sony Vaio Sound Problems

[John Bell]

Anyone else having problems playing youtube videos, on a Windows 8, Sony Vaio with a Realtek High Definition Audio driver?

Searching the web, shows many have had the problem of no sound.

Restarting temporarily solves the problem, but it's a real pain.

If I restart every time I boot up my laptop, the sound is OK for the whole session.

If I don't restart, there is no sound, even though there are no warnings and the Realteck device shows "working".

[John Bell]

Recently, I have not been plugging in my headphones and although there is no start-up sound, YouTube sound is now OK. The headphones output is also working OK.