Once had a problem and discovered a type was moving the form outside of the viewable screen. Could also resize it to too small. I would set an ON KEY to suspend or the like and that way you can stop and check the location properties of the form that disappeared.

>I recently bought a Windows 10, 64-bit pc... 12 gb RAM, 3.5 ghz.... and it's a great pc.
>
>However something curious happens when I'm in VFP...sometimes...(actually fairly often).
>
>I'll be working on an app in the IDE and all of a sudden, the screen will blank out. When it happens it's usually when I haven't keyed in anything for about 30 seconds or so.
>It doesn't always happen... but often enough.
>
>Also, when it DOES happen, I can't get out of VFP. I'll get the dreaded message "can't get out of Visual FoxPro", and I'm forced to hit ctrl-alt-del to bring up the task manager to cancel VFP. I hate doing that, but I can't get control back any other way.
>
>Any ideas?
>Rich Murillo