Stuck on Apple Logo Screen

[Rob1222]

Can someone please help? I have a Gigibyte Z68xp-UP3P F6 motherboard, that I used to run Maverick with no problems, however I can't seem to boot with the Chimera. I can boot all day long with Unibeast using "/System/Library/Kernels/Kernel", but when I boot with Chimera it gets stuck on the Apple Logo screen. I had added the kernel string to my plist but that still didn't work. I booted using -v and found it gets stuck at at the line [PCI Configuration Begin], after that line it doesn't go any further. I have tried both Clover and Chimera. Here is a screen shot of my multibeast setup and my stuck screen, my plist is:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>EthernetBuiltIn</key>
<string>Yes</string>
<key>GenerateCStates</key>
<string>Yes</string>
<key>GeneratePStates</key>
<string>Yes</string>
<key>Graphics Mode</key>
<string>"1920x1080x32"</string>
<key>GraphicsEnabler</key>
<string>Yes</string>
<key>HDAEnabler</key>
<string>Yes</string>
<key>HDEFLayoutID</key>
<string>01000000</string>
<key>IGPEnabler</key>
<string>Yes</string>
<key>Kernel</key>
<string>/System/Library/Kernels/kernel</string>
<key>Kernel Flags</key>
<string>kext-dev-mode=1 PCIRootUID=1</string>
<key>Legacy Logo</key>
<string>Yes</string>
<key>Timeout</key>
<string>2</string>
<key>UseKernelCache</key>
<string>Yes</string>
</dict>
</plist>

Can someone please help me?

 

[P1LGRIM]

In Multibeast - Drivers - System select AppleACPIPlatform Rollback

Good Luck

 

[Rob1222]

Thank you, it worked!!

 

[bobdownard]

This worked for me too. Thank you very much!

 

[Doba]

Thanks it worked for me too

 

[winstonchiu]

In Multibeast - Drivers - System select AppleACPIPlatform Rollback

Good Luck

Have the same issue.

Where do I install the rollback? In the Mavericks drive? Before installing Yosemite?