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Yes I bought it (ref : H6D78ES#ABF). I just changed the wifi card for an AR9280 model which is natively recognized by ML 10.8.3 I made a fresh install with ML 10.8.3. Everything is working except VGA output (but HDMI does). (Also from France...)

After one week of use, system is OK but i have 2 problems : - brigthness adjustment (Fn key + F2/F3) doesn't work : is it a normal situation ? (I can survive without this....) - USB3 ports are recognized as USB2 - actual driver is AppleUSBEHCI I tried to use optional USB3.4x40s.Meize patch on...

Easy to do... I'm about to buy this wifi card but as i'm also running with win7 (64bits) my questions are : - a link for the win7 (64bits) drivers ? - What is your BIOS version ? Is it fully compatible with it ? (No whitelisting problem) Thanks

Finally I made a fresh install using raw dsdt you patched for me and the results are the following : - Dual boot win7 + ML 10.8.3 : OK - CMOS checksum error solved - solution here : http://www.tonymacx86.com/hp-probook/94129-help-cmos-reset-probook-4340s.html - Ethernet (DHCP adress problem)...

:thumbup: Works also for me !! Ethernet cable needs to be plug before boot.

Solution proposed by kpkp (see below) works for me.:) For those (like me) who are not familiar with patching, i followed exactly this procedure : http://blog.yerkanian.com/2012/08/05/cmos-reset-error-on-os-x-10-8-mountain-lion-after-wake-from-sleep/

excuse me but what do you mean by EC reset ?

I have a probook 4540s (H6D78ES) with i5 3230M + HD 7650M Following this guide : http://www.tonymacx86.com/hp-probook/87085-probook-4540s-ivy-bridge-howto-14.html I was able to prepare a dual boot win7+Mountain Lion 10.8.3 For the moment i have to disable the switchable graphics in Bios...

Same problem for me with 4540s (i5-3230M)... Did you already test the proposed solution ?

After some hours... My dual boot (Win7 - OS X 10.8.3) is working !!!:) @BigDonkey I had CMOS Checksum error with the DSDT you kindly patch for me... Anyway I used the options proposed by the probook Installer 6.1b4. 2 more questions : - Is there any possibility to activate my switchable...

Great. I will test it and inform you.

I got my new laptop and i'm almost ready to start installation... Bios updated and usb key ready. Can you tell me what options I have to choose from the probook installer 1.61beta4 ? As i understood patching dsdt gives the best results but i don't feel "confortable" with this. Is there a...

Thank you for your answer. I was aware that the wifi will not work but forgot to mention it. I will have a look to the recommended threads and come back if i have some problems.

I am about to buy this computer and i want to make a dual boot os x (10.8.2 or 10.8.3) and win 7. do you think it is a good choice ? I understood that radeon hd 7650m is not supported (maybe it will be possible with 10.8.3 ?) but i suppose that i can disable the automatic switchable option...