The case of the iMac screen that mysteriously blacks out | Macworld
My mac bought only a month ago was playing dvds perfectly until today when I shifted it on my lap. Then it started to have trouble. Now whenever I play a dvd it plays as normal with sound, the timing bar continues to play but with a black screen. There's no visual whatsoever. Any help would be great! Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4. Press and hold the Command-Option-P-R keys.
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You must press this key combination before the gray screen appears. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected. On the built-in keyboard, press the left side Shift-Control-Option keys and the power button at the same time. It seems like a quality unit so hopefully it lasts a while. Latest USB3. So far so good.
The unit is generally very quiet, and it was easy to hook up. It is lightweight, slim, and made of the same gun metal grey casing as my Macbook Air. I got it to replace a more expensive Apple external Superdrive which failed two days ago after much burning and copying of video files. I don't know how this VersionTech unit will hold up over time but I do like that it has a pop out loading drawer not like my Apple drive.
UPDATE: Where is the DVD Player app?
External USB 2. This really works just as advertised. Just connect it to the Mac's USB port and it opens up iTunes and does the work of extracting data or burning tunes, quickly and easily. I especially liked that there was no software to install and that the brushed silver body perfectly matches the Mac's chassis. It works so well that I have purchased three altogether; one for each Mac in my household.
I would, without reservation, recommend this drive to anyone looking for an affordable add-on to a Mac with a burned out internal drive. Huda Seattle, WA.
I love this little device I'm able to digitize my old CDs on my mac. Using iTunes, the speed for this only goes up to about 8x. It's not as fast as I had hoped, but it works well with my MacBook Pro and I can let it run in the background while I work. There's no drivers needed though for macs.
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It worked right out of the box! I haven't tested DVDs Currently unavailable. Came on time and in great condition. In this situation you may see either dead or stuck pixels onscreen, but these usually do not display in patterns and will not change onscreen or between restarts.
In addition to stuck or dead pixels, you might see black output if the display's inverter or backlights are not working properly. Testing and tackling the issue Any time you are experiencing problems with your system, the first thing to try is to minimize your system to see if the problem goes away. Unplug any peripheral devices from your computer and then boot into Safe Mode by restarting the system while holding the Shift key. Sometimes hardware problems are based in how the GPU is handling high-level computations that are disabled in a minimal boot environment in which only basic video acceleration is used, and booting to Safe Mode can help uncover this.
In addition to Safe Mode, you can try booting to an alternative boot volume such as the OS X installation DVD, or better yet a full OS X installation on an external volume, to see if the problem persists there. This is perhaps the easiest way to isolate a software fault from a hardware malfunction, but keep in mind that you may need to try booting the system to fresh installations of multiple OS versions the latest and most fully updated one, the one your system was shipped with, and so on to see if an intermediate OS update contributed to the problem.
Beyond alternate boot environments, try enabling screen sharing on your system and then connecting to it from another Mac. Screen sharing processes the video output independently of the graphics card, which can help determine whether the problem lies in software or hardware. Since different applications will handle the GPU and other video hardware differently, try launching different applications such as a full-screen game, a DVD player, or an image editor to see if the behavior changes with the use of these programs.
If these show different behavior then you may be able to tell if the problem is a more general issue or if it happens only when the computer is performing certain computations. To tackle software faults, you can try reapplying the latest Combo system updater for your version of OS X in addition to performing a general maintenance routine to clear system and user caches and other temporary items. You can also try removing the hidden global preference files for the user and the system, which hold a number of display settings such as ColorSync profiles.
These files begin with the name. GlobalPreferences but are hidden, so open the Terminal and enter the following two commands to show hidden files in the Finder perform these actions from an administrator account :.http://ebb.eywaapps.dk/wp-content/muggy/beowulf-dating.php
Trouble playing a dvd - there's sound but no visual?
After these commands are run, the Finder will be restarted and you will see all the normally hidden files. Then go to the following directories and remove the global preference files within them, and restart the system:. When you are done removing the global preference files, you can repeat the Terminal commands listed above, but replace TRUE with FALSE to hide the hidden files again and keep the filesystem looking clean. Moving further into tackling software configuration issues, try adjusting your monitor's settings in the Displays system preferences to see if any changes cause the problem to disappear.