USB Com Port - Random reboot of PC

  • Thread starter Thread starter rollasoc
  • Start date Start date
R

rollasoc

Hi,

I have written an application that talks to an external device using RS232
over the COM port. The problem is that most people who now use it, use it
on laptops and most new ones don't come with COM ports anymore.

So we have several USB COM Ports to try. The problem I'm having is that
since I've connected them to the desktop PC and test laptop, every now and
then, whilst running my software the PC just reboots, for no perceived
reason.

I've had some look in google and others have had reboot issues with (non
USB) Soundblaster cards, plus other USB devices when there wasn't enough
power to power them. So I'm starting to look into that.

The App I've written has a C# frontend, with a C++ (COM \ATL) business layer
and all the Comms is in C++ (ATL, COM).

I'd be greatful for any tips on how to track this down. Is it my software,
is it the PC, could it be .Net or what? I've had no problems with physical
COM Ports over the last 18 months on both desktop and Laptops. I find it
bizarre that none of my exception handling is tripped and that the PC just
reboots itself.

So any ideas how to proceed with this.

Rollasoc
 
Well, no one replied, but here is an update anyway.

Looks like it was the device drivers. Updated them to the latest and all
seems to be fine now, at least with the rebooting issue.

Rollasoc
 
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