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HELP! Error in installing on my Notebook Retail


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unable to install snow leopard retail, with some difficulty.


+ does not recognize my Graphics: ATI Mobility Radeon HD4250

+ I do not recognize the wifi: Model Compaq CQ42-223 notebook


The weirdest error happened to me was, that upon entering the apple mac start charging me sound a very high-pitched whistle .... as having an error .... and when it finishes loading and goes to desktop put the sound on mute and just.


here are my characteristics


compaq cq42-223la



Procesador AMD Athlon™ II Dual-Core P320

• 2,1 GHz, Bus de sistema hasta 3,2 GT/s funcionando en modo CA/CC, 25 W



DDR3 de 1 GB (1 x 1024 MB)


Unidades internas

Disco duro SATA de 250 GB a 7200 rpm


Unidades ópticas

Unidad óptica SATA: DVD±R/RW SuperMulti LightScribe con soporte para doble capa



Tarjeta de gráficos ATI Mobility Radeon™ HD 4250



1 puerto VGA

1 puerto HDMI

1 salida estéreo de audífono

1 entrada para micrófono

3 puertos USB 2.0

1 puerto Ethernet RJ45


Wireless Technologies

Intel 802.11 b / g / n

Bluetooth wireless networking


I need help with kext sound, video, wireless please.

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