>>You could try downloading the latest drivers and installing them. If that doesn't work, then try alternate compatible drivers for the card. I would look more at the printer drivers used though and try installing a later version or installing the MSFT version of the printer drivers. Does the pc reboot if the customer uses a standard MSFT HP4 driver during print preview? Obviously he could not print if that printer doesn't exist, but he could 'fake' an HP LaserJet 4 printer in windows and test the print preview in VFP...
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>I was thinking about downloading (suggestion to them) the latest video driver. But why printer driver? The problem happens when he previews reports, not prints. Are you saying that when VFP previews a report it uses the printer driver?

Yes, it does use the printer driver.

To clarify what Tracy (hopefully :)) meant about the video driver:

- make sure the installed driver is the exactly correct one for the make and model of the card
- be sure to download the latest one from ATI; early ATI drivers for their older cards were notoriously buggy
- one way to quickly determine if it's a video driver issue is to temporarily switch the computer to one of the standard built-in MS drivers e.g. 640x480 16-color, 800x600 "Super VGA" etc. The screen will look poor - low resolution and/or color depth but it's very useful for testing
- DON'T use an ATI driver for a different ATI model, whether you think it might be "compatible" or not. This is a sure way to trouble.