Her er noget hentet fra Microsoft.
http://support.microsoft.com/support/kb/articles/Q87/2/39.aspBad Fault in MS-DOS Extender
This error message occurs when the fault handler dispatcher in DOSX.EXE generates another cascaded fault while trying to handle a protected-mode exception. This error is usually caused by one of the following factors:
HIMEM.SYS is unable to control the A20 line.
DOS=HIGH is not functioning properly (related to HIMEM.SYS control).
The RAM, static RAM (SRAM), single in-line memory module (SIMM), or dynamic RAM (DRAM) chips are not functioning properly.
You are running DR DOS.
The third-party memory manager is not configured correctly.
The EMM386.EXE NOEMS x=A000-EFFF line is missing from the Config.sys file.
You have an old, out-of-date ROM BIOS.
Your CMOS settings are incorrect.
Your Windows files are old or corrupted. To test this, create a new directory on the hard drive, and install Windows in that directory.
Your disks are corrupted.
Your system is infected with the Form, Forms, Noint, or Yankee Doodle virus.