ricardolobo Posted November 24, 2016 Share Posted November 24, 2016 Hello. I had a really stable working installation of sierra (latest version) Everything was working fine until one of the rams failed. I had 2 8gb ddr4 sticks. After removing the problematic ram I initially got a CPU panic error. Tried several clover boot flags with no success. I then changed the ram placement slot. Now I don't get a CPU panic error but the boot is stuck at apple logo with the progress bar barely moved. Like 1% If I boot with -v this is the last entry: "appleusblegacyro" I feel like it's cut before it hangs. My system is config is: I5 6500 Asus z170i pro gaming Asus GTX 970 strix 8gb Ddr4 corsair 2 SSD and 1 HDD I have always managed to install and run OS X with no huge problems. Link to comment https://www.insanelymac.com/forum/topic/318314-no-boot-after-removing-half-ram/ Share on other sites More sharing options...
Allan Posted November 24, 2016 Share Posted November 24, 2016 Hello and welcome to InsanelyMac! Did you tried clean the CMOS? Link to comment https://www.insanelymac.com/forum/topic/318314-no-boot-after-removing-half-ram/#findComment-2324061 Share on other sites More sharing options...
ricardolobo Posted November 24, 2016 Author Share Posted November 24, 2016 Hello and welcome to InsanelyMac! Did you tried clean the CMOS? Yes. I had to. The system wasnt booting at all until I figured out that was a faulty ram. If I had to guess this probably have to do with the bios config. I think I have it right.. Link to comment https://www.insanelymac.com/forum/topic/318314-no-boot-after-removing-half-ram/#findComment-2324288 Share on other sites More sharing options...
ricardolobo Posted November 25, 2016 Author Share Posted November 25, 2016 I managed to solve this after 3 days of madness! I don't know what actually solved this problem but here's the steps I did to solve it: Updated the BIOS to the last version available: BIOS 2002 Reset BIOS to optimized defaults and toggle off/on the usual stuff. VT-d off, CFG-Lock disabled, Secure Boot Mode disabled, XHCI Handoff enabled Unplugged all HDD and SDD except for the one with macOS. Started up and.. Success! Plugged everything again, and it's now running flawlessly! Maybe it was the BIOS update or the BIOS reset for the 1000th time.. Or maybe everything. 1 Link to comment https://www.insanelymac.com/forum/topic/318314-no-boot-after-removing-half-ram/#findComment-2324423 Share on other sites More sharing options...
Allan Posted November 25, 2016 Share Posted November 25, 2016 You use DSDT? The file patched? 'Cause if you use it, after upgrade the BIOS, you'll need re-patch your DSDT file again. Congrats for the hard work, I'm happy for you Link to comment https://www.insanelymac.com/forum/topic/318314-no-boot-after-removing-half-ram/#findComment-2324435 Share on other sites More sharing options...
ricardolobo Posted November 25, 2016 Author Share Posted November 25, 2016 My Clover/EFI configuration is quite simple I guess. I only use this: SSDT-Realtek-Audio.aml and FakeSMC.kext, IntelMausiEthernet.kext Nothing else. Should I be using DSDT? 1 Link to comment https://www.insanelymac.com/forum/topic/318314-no-boot-after-removing-half-ram/#findComment-2324438 Share on other sites More sharing options...
Allan Posted November 25, 2016 Share Posted November 25, 2016 Nice! Should I be using DSDT? Only if your Hack needs. If not, keep in this way. Link to comment https://www.insanelymac.com/forum/topic/318314-no-boot-after-removing-half-ram/#findComment-2324442 Share on other sites More sharing options...
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