Bottom Part of Screen Blanks Out on Sharp Portable PC 8000

• Microsoft Windows operating system versions 3.0, 3.0a

SYMPTOMS

When you run Microsoft Windows version 3.0 on a Sharp Portable 386 with an LCD display, and you switch or exit from an MS-DOS application back to Windows, the bottom part of the screen turns black. This problem only occurs when you run Windows in enhanced mode.

CAUSE

This problem is caused by the video card and the way the video memory is mapped. This problem does not occur if you use an external monitor or you run Windows in real or standard mode.

STATUS

There is no workaround. Sharp is aware of the problem and Microsoft will post new information here as it becomes available.

MORE INFORMATION

The Sharp Portable is a 386 20 MHz computer with a 14-inch LCD display. The screen is an illuminated double supertwist 640 x 480 VGA color display. The video card is manufactured by Yamaha and uses an Award VGA BIOS.

The product included here is manufactured by a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.