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Non-responsive Keyboard & Mouse on language select screen


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Hello geniuses,

 

I have scoured InsanelyMac, OSx86, and even, yes, "the site that must not be named," but I cannot find a solution within my immediate knowledge for my problem. 

 

After many tinkerings, I am finally able to get to the language selection screen (first screen in the OS X 10.8 installation process). Much to my dismay, neither my keyboard nor my mouse are responsive. If I leave the screen idle for some time (approx. 8 min) it goes blank white, but hitting the power button seems to wake it up, and I'm back at the language selection screen.

 

I am following this guide to install Mountain Lion (OS 10.8) onto my rig. 

My boot function (is that the right word) is as follows:

 

-v GraphicsEnabler=No -f

 

My rig is as follows:

 

Obsidian 660T Case
ASRock Z77 Xtreme 4
i7 3770k 
32gb RAM (4x 8gb)
2TB HDD, 256gb SSD, 128gb SSD (with Windows 8 already installed on 1 TB. My plan is to install OS X onto the 256 SSD)
2x GeForce GTX 660 ti 3gb SLI (although I've disabled them for now via BIOS, using only the onboard graphics - HDMI hooked up to the motherboard)

Dedicated Sound card onboard
Blu Ray burner/Reader 12x
Wifi/Bluetooth Card

Extremities:

Monitor: 27" Samsung HDMI 1920X1080 monitor 2hz refresh rate

Keyboard: SteelSeries Merc USB Wired 

Mouse: Razer DeathAdder

 

I have already deleted the 

nVidia* files from the /Extensions folder, as well as /Caches/com.apple.kext.caches/Startup/Extensions.mkext

 

I have tinkered around with Kext Wizard to see if I need to install a driver that is recognized at installation, but honestly cannot figure out what to correctly add. 

 

Help me InsanelyMac. You're my only hope.

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Hello and welcome!

 

At first: I'm no genius and it'd better if I'm noones only hope ;)

 

Did you connect your keyboard and mouse via the blue USB 3.0 ports? Afaik are these only working natively on Gigabyte motherboards, while mobo from all other vendors will need a driver/kext. Possible solution: plug them to the (black) USB 2.0 ports.

 

If this won't help, try to tinker around with the bios settings for UEFI/legacy devices. (My last ASRock mobo was a 939 Dual SATA - so I'm quite outdated regarding their bioses and correct names for the switches inside them)

 

Good luck!

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