Tom,
Just guessing here does that msg really say "no audio output device
installed".

Is it possible that in the process of upgrading the ram that you knocked a
wire loose or knocked a card loose or changed a non-ram related bios
setting:?

In any case, Win+R | DevMgmt.msc to run device manager and then check the
devices for yellow and/or red icons.

karl

"Tom" <Tom@discussions.microsoft.com> wrote in message
news:901F5EE8-55CA-4FAC-B95C-F3B503442096@microsoft.com...
> Hi, I've recently upgraded the RAM on my Computer, turned the machine on
> and
> everything seemed fine, until I noticed that there was "No Output Device
> installed".
> I've noticed many topics about this subject but all seem to be occurring
> after installing Vista not RAM, any ideas?
>