Tamas,
     I switched my systems around so that I could use the one that the=20
Arduino IDE and MpLabX would work on. Now I am doing some testing. I=20
stripped the other system down so that it is only working as a print=20
server and a 5.1 audio system. I reinstalled the Arduino IDE and it=20
works. I don't know if it is a software issue or hardware related.
     I found a bad cap on the Tyan motherboard and I replaced it before=20
I put the computer back together. I am reinstalling MpLab right now. I=20
will test it next. If it is hardware I will switch the systems back=20
around. The Tyan board is about twice as fast as the Matsonic board that=20
I am using right now. There are some other benefits also. If it software=20
I don't know if I will switch it back around until I know what software=20
is causing the problem.
Thanks,
rich!

On 10/9/2014 3:56 AM, Tamas Rudnai wrote:
> If the entire computer freezes to death then my bet would go to the drive=
rs
> (drivers are usually not multi processed / threaded and therefore can loc=
k
> up the entire system).
>
> Other option is if a user app goes to 100% CPU utilization on all cores a=
nd
> your computer did not "freeze" but left no time for other processes to ru=
n
> so your UI becomes "unresponsive". You can load Task Manager with the
> Performance tab on front before launching the app, make sure "always on
> top"...
>
> Can you try it with other driver version or other type of USB-Serial
> converter (or native RS-232)? Maybe if you use different Windows version =
or
> Patch Level?
>
> Tamas
>
--=20
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