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Mavericks Black Screen

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IGPEnabler=Yes
We only need this flag when laptop comes with both HD4000 and discrete graphic card, is that correct ?
My 4540s has intel HD4000 only as GPU, and I don't remember the exact flags I used the last time I installed ML
:banghead:

Good to know, I start to hate Chrome for its annoying flickering-on-gray problem.

Not sure as I did not need any of those flags when installing ML.
 
I´m getting black screen on the 4340s with the suggested boot flags...don´t no what to do
 
IGPlatformID=01660003 IGPEnabler=Yes -x PCIRootUID=0 GraphicsEnabler=No
 
I had the same prob but switched to an old mac usb keyboard with the mouse combo from a g4 and it worked...
 
The "go to" flags for 4x40s (and a lot of other Ivy laptops) are: "IGPEnabler=No -x -v"
 
The "go to" flags for 4x40s (and a lot of other Ivy laptops) are: "IGPEnabler=No -x -v"
I have tried install on probook 6470b. And after i have logo, the screen comes to Black. Any suggest? Plz help. thx
 
I have tried install on probook 6470b. And after i have logo, the screen comes to Black. Any suggest? Plz help. thx

Is that booting the installer or after completing the installation with the ProBook Installer. Refer to the guide you're using and the step within that guide (by number).
 
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