The interface was also used for a simple task manager in Windows 3.1, which could be invoked by pressing Ctrl+ Alt+ Del while running Windows in the 386 enhanced mode. However, severe system errors still caused Windows to exit back to MS-DOS, similarly to the older versions. In Windows 3.x, this was mostly used in situations where a program couldn't continue running until the user resolved an issue, such as device conflicts or disk swaps. The look of the modal dialog was virtually unchanged through the rest of the classic Windows series. Initially, it used a black background, although Windows 3.1 later changed it to blue. This was a full screen message in text mode, which suspended Windows until being dismissed by the user. Whenever Windows did crash, it often resulted in a system hang or the shell returning back into DOS.Ī modal dialog for displaying important system messages was first introduced in Windows 3.0 and was mostly used by virtual device drivers in 386 enhanced mode. When early Windows is run on a newer version of MS-DOS, it will print out an "Incorrect DOS version" error message, followed by garbled contents of the memory during the boot before loading into the Windows shell, which is often thought to be a crash screen, however, it is only a bug in the logo code. Contrary to popular belief, Windows 1.0 and Windows 2.x did not have a crash screen.
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