DieterWo Posted February 19, 2015 Share Posted February 19, 2015 Hi, i'm a new User here. I tried to install a Yosemite on a Dell Optiplex 755. I installed with Clover, and after a few problems during installation it worked.When I use the system after installation, the only times I can start the location, language, and adjust the keyboard and everything seems to work.But when I try to perform a reboot, it hangs right after the user login. First, the hard disk works a bit, but then nothing seems to happen.I did a little searching on the forums and came across references, suggesting that there may be an error in the graphics switching. But I'm not sure myself.But in the recovery installation, I can boot without problems.What can I do to locate the problem? I am using an AMD / ATI Radeon HD 2400 XT, but still have the internal graphics card, an Intel Graphics Media Accelerator 3100. Which one should I take?Can any of you help me? Do you have to install as any extension?Thank you for your help. Dieter Link to comment Share on other sites More sharing options...
artur_pt Posted February 19, 2015 Share Posted February 19, 2015 hello the intel to work only in 32 bit .. so yose no chance at all but it should be disabled by the off board good hack Link to comment Share on other sites More sharing options...
redneck Posted February 19, 2015 Share Posted February 19, 2015 Dieter, I am trying to install on Dell 755 .bios A19. I got a USB Maverick to boot once. After hours of tweaking but nothing boots now. What did you use for bootloader. what is your bios setting? Dieter, I have Yose installed on Tosh laptop and it will only run after bios reset ! 1 Link to comment Share on other sites More sharing options...
DieterWo Posted February 19, 2015 Author Share Posted February 19, 2015 @artur-pt: that can be right. But at time i use the Amd-card, with the Same problem. @nedreck: I use as bootloader Clover. For installation it works for me, so i think it must also work for regular booting. The hint with biosreset is good. I try it tomorrow. It's tricky to locate the error without an errormessage or a log. Link to comment Share on other sites More sharing options...
DieterWo Posted February 20, 2015 Author Share Posted February 20, 2015 Okay, today i look on my bios, and i see A04. Oh, it's realy old. But it's better to change to a new one, or leave it at A04? I don't know if a can go back after updating the bios. From Dell i can get A19, A21 or A22. I see some articles, where people says the A19 where better for osx, but i don't know. Link to comment Share on other sites More sharing options...
redneck Posted February 21, 2015 Share Posted February 21, 2015 Dieter I had A19 and nothing boots. updated to A22 nothing boots. I would not update if things are working. I am running windows 10 on Dell 755 A22. I swapped a HD from PC that was running Yosemite 3 fine but will not boot. Link to comment Share on other sites More sharing options...
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