Hi there, I've been struggling with this for a few days and am hoping someone will be able to help me out. I will describe what I've tried: DSDT Edits I've tried removing \_SB.PCI0.SBRG.SIOW (Arg0) in the WAK section of the DSDT as others have tried successfully on this board. After installing the DSDT through MultiBeast I reboot, and get stuck at the white Apple logo/spinning wheel. What's weird is that if I'm screen sharing during the process, it will come up, but not in the resolution of the regular monitor. I've tried various boot flags. -v DSDT=No GraphicsEnabler=No UseKernelCache=No in various combinations. The result is always the same. With -v it always looks like this: IMG_2175.JPG I've also tried updating and removing the RealTek kext, it just hangs up at the same spot. SleepEnabler.kext I've also tried using the SleepEnabler.kext. That causes an immediate kernel panic. I have tried using the various pmVersion=#. My understanding is that pmVersion=23 would be what I need to use. No luck there. Please Sleep Have also tried pleasesleep.app as others have had success with it. Another no-go. Graphics Mode I have also edited my chameleon.plist to try and use this GraphicsMode Someone over at InsanelyMac had luck with this enabling his sleep. Didn't work with mine and I used it in the DSDT process as well. Attachments Here is a copy of my .plist I will also be including a text of my kexts. Any help would be appreciated. I just don't understand why I would not have success with this board/DSDT while others have. Is there something conflicting thats getting in the way? Why also would it boot into Screen Sharing but not display on the normal monitor? I feel that is an indication of something, but I don't know what. I've tried to be thorough to get help here, if there's anything else needed please let me know. Again thanks. I'm willing to try a few things. I make backups and am able to get back into the system in the event of a kernel panic or otherwise.