<div>
<div class="content wysiwyg-content">
This has been going on for about 3 years. Computer is about 4 years old. Neighbor's computer, and I'm not a Mac techie, so thought I'd post here after they asked about it. Thanks for your help and suggestions. The keyboard stays lit, even though the screen is blank. Computer appears to be off, neighbor says.
</div>
</div>


This has been going on for about 3 years. Computer is about 4 years old. Neighbor's computer, and I'm not a Mac techie, so thought I'd post here after they asked about it. Thanks for your help and suggestions. The keyboard stays lit, even though the screen is blank. Computer appears to be off, neighbor says.

Mac Computer screen goes blank even while using it

Apple's early computers ran on a variety of operating systems, including a Pascal version and one based on CP/M, before releasing its ProDOS with the advent of its 16-bit computer. With the release of the Lisa, which had its own OS, Apple and computing entered the graphical age; it was followed by the Macintosh, which offered a series of "System" operating systems. Other Mac operating systems included PowerPC until Apple acquired NeXT and folded it into the Mac OS. Current operating systems for Apple devices are Mac OS-X and iOS.

Apple OS

Mac OS X is the desktop operating system from Apple Inc., found on Macintosh computers. OS X consists of a Mach/BSD-based kernel, operating system interfaces primarily based on FreeBSD and additional frameworks (written in C, C++ and Objective-C providing user interface and application-level services.

Mac OS X

All of Apple's hardware is produced solely by Apple Inc., who determines internal systems, designs, and prices. Apple buys certain components wholesale from third-party manufacturers. The current Mac product family uses Intel x86-64 processors. All Mac models ship with at least 1 GB RAM as standard. Current Mac computers use ATI Radeon or nVidia GeForce graphics cards and include a dual-function DVD and CD burner, called the SuperDrive. Current Apple hardware includes the iPad, iPhone, iMac, Mac Pro, Macbook, iPod and Apple TV. Discontinued hardware includes the Apple I, Apple II, and the Apple III, the Lisa, the Newton, the Quadra, Performa, Centris, Macintosh II and LC series, the Power Macintosh, iBooks and the MacBook.