Peerke Posted March 18, 2015 Share Posted March 18, 2015 My setup: GA-X79-UD3 with 4930K nVidia GT610 Chameleon MacOS 10.9.5 rampagedev installation with his x99.dmg. Been running this setup for over half a year now with no problems whatsoever. Last weekend I got tempted to try some overclocking, nothing big 4.2 - 4.4 GHz. After a few attempts which led to system freezes I decided to go back to to the original settings. Then the 'accident' occurred and my screen went berserk after booting: gray screen with Apple logo, black screen for 20 seconds, completely gray screen for a while and then back to black. According to the system console the system keeps on running, it's just the display that is acting weird. So I took to booting from a backup from before the OC experiment: same result. Reset the mobo: same result. Booting with -x gives me a working display, albeit with less colors (bit VGA-like) and scrolling is not very smooth. Last message before screen goes black is: '-- power management may be incomplete or unsupported --' Since I still cannot boot after a mobo reset and with a backup that has been known to work, I suspect the GT610 may be the culprit? Any suggestions on how to diagnose/fix this? Link to comment Share on other sites More sharing options...
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