Stuck at white screen with grey Apple logo

[sneakyvince]

Not sure of the problem, but this might be of help http://www.tonymacx86.com/mavericks...osh-doesnt-boot-applekeystore-starting-2.html.

Thank you for your answer but my problem is that I have never been able to boot into Mac OS X.

 

[sneakyvince]

bump

 

[mackoall]

So, y have ASUS P8H67-M evo, and same issue after Multibeast
If you tried to install "AppleACPIRollback" from Multibeast and still not work, maybe i have an alternate solution.

You should Download an older version of multibeast ( BEFORE 10.9.5 )
1. Please be sure you have the "DevMode" Activated in Chameleon Plist
2. Boot with -f -x
3. Delete AppleACPIPlateform in System/Library/Extensions
4. Run the old Multibeast and Choose the " Older Rollback "

Don't forget BEFORE 10.9.5 !!!

It worked for me.
I don't know what they changing on 10.9.5 but this is the only solution i've found

 

[sneakyvince]

So, y have ASUS P8H67-M evo, and same issue after Multibeast
If you tried to install "AppleACPIRollback" from Multibeast and still not work, maybe i have an alternate solution.

You should Download an older version of multibeast ( BEFORE 10.9.5 )
1. Please be sure you have the "DevMode" Activated in Chameleon Plist
2. Boot with -f -x
3. Delete AppleACPIPlateform in System/Library/Extensions
4. Run the old Multibeast and Choose the " Older Rollback "

Don't forget BEFORE 10.9.5 !!!

It worked for me.
I don't know what they changing on 10.9.5 but this is the only solution i've found

I haven't ever booted into Yosemite itself, so why would it matter which multibeast version is on the USB stick? I don't see how that would cause the problem I'm having.

 

[sneakyvince]

1. I haven't ever booted into Yosemite itself, so why would it matter which multibeast version is on the USB stick? I don't see how that would cause the problem I'm having.

bump

 

[Dnk_Productions]

I too am stuck at the white screen. Gigabyte H61 USB3 GT640 i5 2500. I ran -v and received the attached. Any thoughts? Never had an issue installing any previous versions. This is an update from a mavericks (removed the kexts and plist as per the instructions). A clean install does not work either though. Any insight would be great, otherwise guess I'm just going to stick with mavericks.

Thanks