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dos application

By SimY ·
I have a dos application which runs in full screen on WinXP. Once or twice a day, the screen will automatically go black and when the display reappears after a second, the application is running in a window. There are no apparent problems with the application itself as I can return it to full screen and continue working.

It doesn't occur at any particular time of day, nor are there any interruptions from other applications that I can see (e.g. outlook, antivirus). Also, nothing listed in the event logs relating to this. I have a NVIDIA Riva TNT2 vide card and 17" diamond view monitor. Look forward to your suggestions. Thanks.

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