Thanks for responses. It took a little time to get to all your suggestions. Here's what I know:

Here's a slight clarification of the problem. First the problem occurs on "double click", not "click" as originally reported. Second, when I say "far right of the screen, half way up", I do mean screen, not window. So if the BIAB window is reduced to less than full screen, the pointer lands on the right edge of the screen.

Keep in mind that this problem happens only with BIAB, no other program. And when I do a BIAB Return to Factory Settings the problem goes away for a while. This at least suggests that the hardware and drivers, for that time, are able to work successfully with BIAB.

Rachael
- All drivers now up to date. Video card was a not quite. Now all are. No change.
- Tried different screen resolutions and qualities. No change.

Jeff
- Both the previous wired MS Explorer 3.0 mouse and newer Logitech wireless laser MX1100 are USB. Have not (and cannot) try on other computer with BIAB.

Matt
- Fiddled with Control Panel as suggested. I do have the the "Move pointer to default button" checked. No fiddling resolves the problem.

- Tried different USB ports. No help.

- I don't think I have a network card (Just a home computer. No networking going on except for DSL "network adapter")

- Ran DPC - all short green bars 100-300 usec - suggesting no apparent drive problems.

So, any other ideas, or has anyone else experienced this?

Thanks.

kelso

Dell Desktop XPS 8100 W10 HomePrem/64 / Core i5 760 (quad, 2.8GHz) / 8GB DDR3 / 1 TB SATA / ViewSonic VG2428wm / EMU1616 PCI / Event ASP6 Active Monitors / BIAB 2019 64 bit (609) / Cakewalk