captainmac Posted September 25, 2015 Share Posted September 25, 2015 Hello everybody, I have some trouble with my HD7770...After many many hours trying differents methods, I successfully to install Yosemite 10.10 on my hackintosh with everything working (audio, lan, usb).So, after that, I want to update my install to 10.10.5 with combo update.Updating is going to apply normally but after reboot I can't have an "viewable" login screen.The only way to boot correctly is by using -x switch.Any ideas ? My config : - Motherboard : GA-B75M-D3H with last bios F15 - CPU : Intel I3-2100 - Graphics : MSI HD7770 with 1024 Mo GDDR5 - Audio and Lan : Using onboard - Bootloader on EFI partition : Clover 2.3 R3270 Thanks a lot ! Nicolas Link to comment Share on other sites More sharing options...
vusun123 Posted September 25, 2015 Share Posted September 25, 2015 Search AMD 7xxx black screen fix on google, add site:insanelymac.com ; there's Verde.kext which will solve your problem Link to comment Share on other sites More sharing options...
captainmac Posted September 25, 2015 Author Share Posted September 25, 2015 Hi ! Thanks for reply, I try an kext but it isn't working. The problem is on yosemite login screen , it's scramble and unviewable. Maybe it's an screen resolution problem because I have actually an old 17inch lcd display wich is not able to display upper than 1024x768 resolution if I remember correctly. So can exist an fix for setting the login screen resolution ? For more clear explanation, when I speak about login screen, this is the screen comming after boot process where your username is display and where you put your password for access to the finder (the desktop). Thanks a lot Kind regards Link to comment Share on other sites More sharing options...
icefiregx Posted October 16, 2015 Share Posted October 16, 2015 You try this post instruction. http://www.tonymacx86.com/graphics/161511-radeon-hd-7750-xfx-glitchy-after-10-10-3-update.html Link to comment Share on other sites More sharing options...
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