I woke up to my mac having green pixels through out the screen backround. after using safe boot, the screen is back to normal but now I have no sound. when I restart , the screen goes back to green pixels and sound. safe boot again, great screen not sound. I'm stumped. my sound preference is all gray and says no imput or output. any ideas?
iMac, Mac OS X (10.5.8), everything else works fine
Some features don't work in Safe Mode
Safe Mode can be useful for troubleshooting. However, certain Mac OS X features do not work in Safe Mode. For example, you can't use DVD Player, capture video in iMovie, use audio input or output devices, or use an internal or external USB modem. The behavior of some devices such as an AirPort card may vary depending on computer and Mac OS X version.
http://support.apple.com/kb/ht1564
The operative word here is devices. Shouldn't disable all sound. Internal speakers should still be working.
This still suggests a hardware problem. Run the Hardware Test again in extended. The AHT is known for not being that reliable in picking up errors.
i ran hardware test. nothing wrong there. i went back to regular boot . still having a problem with green lines on my desktop which made me use safe boot in the first place. I've tryed eveything and can't get rid of the green. safe boot gives me perfect screen, but no sound.
i did that, but no luck. the screen has green, gridy lines in the backround and everything I click on turns green. I can see everything but it's just annoying because everything works fine. besides that, I bought a new aluminum keyboard and I understand there is an issue with volumn control, so I have two keyboards hooked up for the sound, cause my m & p quit on my old one 😟
It's just normal, that you have no sound in save boot. No Sound, no ethernet, no airport ...
The green pixels are just in the background, or all over the windows / programs?
I think you'll have to bring this in for a proper diagnosis.
One more idea. Create a new account and test to see if this happens there.
no sound after safe boot
